TMKOC special appearances list.

Taarak Mehta in the first episode, Diwali festival episode, in the 200th episode,and also in the 900th episode.

Raju Srivastav in the 200th episode.

Satish Kaushik, Ruslaan Mumtaz and Sheena Shahabadi in the 200th episode; (to promote their film Tere Sang).

Vinay Pathak (to promote his film Straight).

Randeep Hooda in the Ganesh Chaturthi festival episode; (to promote his film Love Khichdi).

Shreyas Talpade in the Ganesh Chaturthi festival episode; (to promote his film Aagey Se Right).

Ajay Devgan in the Diwali festival episode; (to promote his film All The Best: Fun Begins).

Sunil Pal (to promote his film Bhavnao Ko Samjho).

Sharman Joshi and Vatsal Seth (to promote their film Toh Baat Pakki).

Irfan Pathan, when Roshan Singh Sodhi meets him at his Baroda residence after Gokuldham "Cricket" Premiere League (GPL).

Ayushmann Khurrana (to promote the cricket series DLF IPL).

Anang Desai, Rajeev Mehta, Nimisha Vakharia, Jamnadas Majethia and Supriya Pathak in the Ganesh Chaturthi festival episode; (to promote their film Khichdi: The Movie).

Rishi Kapoor and Neetu Singh (to promote their film Do Dooni Chaar).

John Abraham and Pakhi Tyrewala in the Navratri festival episode; (to promote their film Jhootha Hi Sahi).

Indira Krishnan (to promote her serial Krishnaben Khakhrawala).

Hemant Chauhan in Bhajan Samaroh after Gokuldham is repainted.

Darsheel Safary (to promote his film Zokkomon).

Salman Khan (to promote his film Ready).

The Smurfs(as in the movie), (to promote their film The Smurfs).

Falguni Pathak in the Navratri festival episode and Sharad Poornima episode.

Saroj Khan in the Disco Dance competition as judge.

Boman Irani and Sharman Joshi (to promote their film Ferrari Ki Sawaari).

Abhishek Bachchan, Ajay Devgan, Rohit Shetty, Prachi Desai and Asin (to promote their film Bol Bachchan)

Sabri Brothers (Aftab Sabri and Haashim Sabri) to celebrate Eid in Gokuldham society with Qawwali.

Ranbir Kapoor (to promote his film Barfi!).

Kareena Kapoor (to promote her film Heroine).

Paresh Rawal in the Ganesh Chaturthi festival episode; (to promote his film Oh My God).

Anandji Virji Shah in the Ganesh Chaturthi festival episode in Antakshari competition.

Asitkumarr Modi, the producer of this sitcom, in the 1000th episode.

Giaa Manek to promote her show, Jeannie Aur Juju.

Ajay Devgn (making his third appearance on the show) and Sonakshi Sinha to promote their movie Son of Sardaar and to congratulate the team for completing 1000 episodes.
The whole off-set team of Taarak Mehta Ka Ooltah Chashmah including the director, producer, writers, sound designers of the show. (To celebrate the show's success of 1000 episodes on the 1008th episode of the show).

Taarak Mehta's daughter to congratulate the team for a 1000 episodes

(Source: Wikipedia)