2001
Athletics New Year Party SP! 21-Century Party (sports show, jan 02)
Nakai Masahiro no Boku iki Special (variety show, jan 06)
Shiroikage (White Shadow) (drama, jan 14 - ? winter)

2000
Lotte Chocalate - kaka o megumi (cm, jan O.A)
Suntory SuperHOP's (cm, jan - O.A)
NTT Wireless ISDN (cm, march - O.A ) - with goro
NTT - Mail Reading Mouse (cm, march - OA)
Sky Perfect TV (cm, march - O.A)
Nakai Masahiro no Kazoku Kaigi wo Hirakou 3 (variety show, march 22)
Nakai Masahiro no Boku iki Special (variety show, march 25)
Akashiya manshon monogatari Special (variety show, march 29)
Tokuban (variety show, march 30)
Professional Baseball Opening Ceremony "Giant x Hiroshima" (baseball match, march 31)
Shiseido UNO Cosmenity (cm, april O.A)
Rotog Zi Flush (cm, april O.A)
Densetsu no kyoshi(Legendary Teacher) (drama, apr 15 - june 24, spring) - starring with matsumoto hitoshi
Sunday Jungle 2000 Year-end SP (variety show, dec 24)
Tokuban (variety show, dec 28)
Waratte Iitomo Special Scene Issue 2000 (variety show, dec 27) - Nakai, Tsuyoshi & Shingo

1999
Furuhata Ninsaburo VS Smap (drama special, jan 3) - popular detective series
Ohayo! Smap (weekly radio program, from mon-fri, jan 11 - ??) - host
Stop the Smap (weekly radio program, from mon-thurs, feb 1 - 12) - host
Stop the Smap (weekly radio program, from mon-thurs, mar 1 - 11) - host
Sky Perfect TV (cm, mar 17, 99 - present) - cm regarding baseball match
All Star kansha sai '99 cho goka! Quiz ketteiban (variety show, mar 27)
(variety show, apr 7) - host
Stop the Smap (weekly radio program, from mon-thurs, apr 26 - may 11) - host
Naniwa kin yu do 4 (drama, apr 30 ) - short drama
Good News (drama, apr 11 - june 27, spring) - starring with mayu tsuruta
Rotog Zi Flush (cm, apr - present)
Rotog/ZIO (cm, apr 99 - present)
The Secret Live (talk show, july 4 - 7) - with tsuyoshi and shingo
Stop the Smap (weekly radio program, from mon-thurs, july 12 - 23) - host
FNS 1999 127,000,000 Peoples 27 Hours TV Yume-Rettou (27hours live show, july 18-19) - nakai hosting the show non stop for 27 hours
Ohayo! Smap (weekly radio program, from mon-fri, august 16 - sept 4) - host
Shiseido UNO Cosmenity (cm, august - present)
(cm, august - present) - with shingo
(baseball game, october 11) - a baseball game which organized by Johnny's Jimosho on Japan National Sport Day in Tokyo Dome. The baseball team was led by Nakai-kun
(variety show, sept 22) - host
(music show, sept 30) - host
(variety show, oct 2) - host
(variety show, oct 7) - guest
(variety show, oct 9, 16, 23) - interview
(sport show, nov 9)
(variety show, nov 20)- nakai was the guest of the show which hosted by Kinki Kids
Ohayo! Smap (weekly radio program, from mon-fri, august 16 - sept 4) - host
(music show, dec 23) - host
Mecha Mecha Ike teru! Special no mido koro (variety show, Dec 25) - Nakai's traveling series
Mecha Mecha Ike teru! Special (variety show, Dec 25) - Nakai's 'traveling project in Japan'
Sky Perfect TV (cm, winter, 99 - present)

1998
Shinohara Tomoe to Oshougatsu (variety show, jan 2)
Aji ichimonme Special (drama, jan 2)
Naniwa kin yu do 3 (drama, jan 5)
Kansai Yu-ing ikiatari battari tour (variety show, jan 11)
Nakai Masahiro no Bokura wa minna ikiteiru Special (variety show, jan 18)
Samma Tokoro no midarezaki hana no geinoukai (variety show, jan 24)
Super Hop Beer (cm, spring 98)
Takeshi, Samma no yuumei jin no atsumaru mise (variety show, april 2)
'Ce'3 kyuujou zenbu misemasu/Dokusen nama chuukei special (professional baseball opening games, apr 3)
Mecha x2 IKEteru Special (variety show, apr 4)
Nakai Masahiro no Boku-Iki accele zenkai 120mns Special (variety show, april 8)
Brothers (drama, apr 13 - june 29) - starring with kimura yoshino
Mecha x2 IKEteru (variety show, may 2)
Shiseido UNO Cosmenity (cm, sept 12, 98 - present)
Oshare KANKEI (variety show, sept 20)
Super special '98/Nihon TV Ongaku no saiten (variety show, oct 10)
(variety show, dec 7) - host
Super Hop Beer (cm, fall 98)
Saturday Night Smap(Sata*Suma) (variety show, fall 98 - present) - co-host with shingo
49th NHK Kouhaku Utagassen (variety show, dec 31) - second time as the host of the show

1997
97 Shinshun Kakushigei Taikai (variety special, jan 1) - co-hosted with tsuyoshi and shingo
Aji Ichimonme Special (drama special, jan 2) - on asahi tv
Nakai-kun Onsen Special (variety show, jan 3)
Bokuga Boku de Arutameni (drama special, jan 3) - with smap
Nakai-kun's Sei Ippai (tv Special, early 97) - chronicled nakai-kun's love for baseball
Saigo no koi (drama, july 11 - sept 19) - starring with takako tokiwa
Super Hopps/SUNTORY (cm, autumn 97- ??)
Mecha mecha iketeru-Gachikon iwasetaru Special (variety show, october)
Nakai-kun Onsen (variety show, october 97-mar 25, 98)
Nakai Masahiro no Bokura wa minna ikiteiru (variety show, oct 29, 97- ?? ) - host
RVR/MITSUBISHI (cm, November 97- ? )
Charity Music-thon (24hrs radio program, dec 24-25)
48th NHK Kouhaku Utagassen (variety show, dec 31) - host, represented haku team.

1996
Aji Ichimomme 2 (drama, jan 11 - mar 21)
Dareka ga dareka ni koishiteru (drama, mar 29)
TK Music Clamp (variety show, jan 31) - as a co-host
Naniwa kin yu do (drama feb 16)
Shouri no megami (drama, apr 16 - june 25)
Wide Living Aircon/DAIKIN (cm, spring 1996- present)
TK Music Clamp (variety show, may 15, 96 - june 11, 97)
Nakai-kun Onsen (variety show, july 13, 96 - march 97) - host
Crunky chocolate/LOTTE (cm, autumn 96 - present)
NaiNai(99) Shusse kaidou (variety show, sept 29)
Samma no sports suruzo (variety show, oct 2)
Yo nimo kimyou na monogatari-Huteiki bus no kyaku (drama, oct 2)
FNS Cho TV no saiten (variety show, oct 3) - host
All Star quiz kettei ban (variety show, oct 5)
Naniwa kin yu do 2 (drama, oct 8)
Ongaku no saiten (variety show, oct 12) - Host
Utaban (music show, oct 15, 96 - present) - host of the music variety show, co-host with ishibashi takaaki
Pro yakyuu kou chin play (variety show, nov 16) - host
Nippon hoso charity music-thon (24hrs radio program dec 24-25)
Ace Cock 1.5 Supercup (advertising campaign, 96-97) - with smap

1995
Kagayaku toki no nakade (drama, april - june) - a popular medical drama
Aji Ichimomme (drama, jan 12- mar 16)
WOO YAH SMAP (radio program, Apr 2, 95- ??)
Young League i:ne, Yume nenkin/NISSAY (cm, spring 95- present)
Some girls' SMAP (radio program july 1, 95 - present)
Sunday Jungle (variety show, oct 8, 95 - present) - a weekly show, features on a review of news and sports
Nama Samma Minna de ii komochi! (variety show oct 20, 95- ?? )
Pretere 300/RIKOH (cm, winter)

1994
Kimini Tsutaetai (drama special, apr 24) - played a country bumpkin
Cinemagic nanka hen? (movie, sept)
Shoot (movie, 94) - with smap
Yu Pack/Japanese Postal Office (cm, spring)
Crisp Stick/LOTTE (cm, spring)
OH! L Club (variety show oct 1, 94- ??)
Doubt wo sagase 2 (variety show oct 20, 94-june 29, 95)

1993
Ude ni Oboe ari 3 (drama, jan)
Private Lessons (movie, mar) - played goro's classmate in this movie set in united states
Another (drama play, august) - with smap
Nakai Masahiro no All Night Nippon (radio program, nov 15, 93-oct 31, 94)
Idol on stage (variety show, oct 10, 93- sept 10, 95) - host

1992
Gakkou Eh Ikou Special Tabitachino Asani (drama special, apr) - with goro
Saint Seiya (play, summer) - with smap
Rainbow Odorino Hitobito (drama, may)

1991
Gakkou Eh Ikou (drama, apr - june ) - with goro
Wakasama zamurai torimono chou (drama, jan 2)

1989
Abunai Shounen III (drama, oct 88 - mar 89) - with smap
Jikan Desuyo Heisei Gannen (drama, oct - dec ) - costarred with shingo and tsuyoshi

1988
SMAP formed (april)