Question: Who is an Indian film actor and producer that co-hosted the 57th Filmfare Awards ceremony in 2012?

Context paragraphs:
57th Filmfare Awards: The 57th Filmfare Awards were held on January 29, 2012 at Film City, Mumbai honoring the best film of 2011 from the Hindi-language film industry (commonly known as Bollywood).  The ceremony was jointly hosted by Shahrukh Khan and Ranbir Kapoor.  Incidentally, both of them have hosted the award ceremonies previously but with different co-hosts (Khan with Saif Ali Khan, Kapoor with Imran Khan), hence making it the first time for this pair to host the show.

Aruna Irani: Aruna Irani (born 18 August 1946) is an Indian actress who has acted in over 300 films in Hindi, Marathi and Gujarati cinema, mostly playing supporting and character roles.  She has danced in the songs "Thoda resham lagta hai" from the film "Jyoti" (1981), "Chadti Jawani Meri Chaal Mastani", "Dilbar dilse pyare", and "Ab jo mile hai" from the film "Caravan" (1971); and "Main shayar to nahi" from the film "Bobby" (1973).  Her performances won her a nomination at Filmfare Awards for Best Supporting Role.  She holds the record for winning the most nominations (10), in this category, and received the award twice for her roles in "Pet Pyaar Aur Paap" (1985) and "Beta" (1993).  In January 2012, she was honoured with Filmfare Lifetime Achievement Award at the 57th Filmfare Awards.

Shruti Haasan filmography: Shruti Haasan is an Indian film actress, composer and playback singer who works in Telugu, Hindi, and Tamil cinema.  Born into the prominent Haasan family, she is the daughter of actors Kamal Haasan and Sarika Thakur.  Shruti Haasan started her career as a playback singer at the age of six in the 1992 Tamil film "Thevar Magan".  She later made a cameo appearance in her father's Tamil-Hindi bilingual directorial "Hey Ram" (2000).  Haasan's first major appearance was in Soham Shah's Hindi film "Luck" (2009), in which she played a dual role of a woman avenging her twin sister's death.  She played the female lead in the films "Anaganaga O Dheerudu" and "7aum Arivu"; both were released in 2011 and together earned her the Best Female Debut – South at the 59th Filmfare Awards South ceremony.  Her subsequent releases "Oh My Friend" (2011) and "3" (2012) were commercially unsuccessful.  The latter earned her a nomination for the Best Actress – Tamil at the 60th Filmfare Awards South ceremony.  A turning point came in Hassan's career with Harish Shankar's commercially successful Telugu film "Gabbar Singh" (2012).  The release was followed by a series of successful films such as "Balupu" (2013) and "Yevadu" (2014).  She received her first Filmfare Award for Best Actress – Telugu for her performance in "Race Gurram" (2014).

13th IIFA Awards: The 2012 IIFA Awards, officially the 13th International Indian Film Academy Awards ceremony, presented by the International Indian Film Academy honouring the films of 2011 took place between June 7–9, 2012.  The official ceremony took place on June 9, 2012, at the Singapore Indoor Stadium in Singapore for the second time after 2004.  The ceremony was televised in India and internationally on Star Plus.  Actors Shahid Kapoor and Farhan Akhtar co-hosted the ceremony the first time.  The IIFA Red Carpet was hosted by Karan Tacker

39th Filmfare Awards South: The 39th Filmfare Awards South Ceremony honouring the winners of the best of South Indian cinema in 1991 is an event held on March 31, 1993 along with Bollywood Filmfare Awards was an event held at the Bombay City.

35th Filmfare Awards: The 35th Filmfare Awards were held in 1990.  Sooraj Barjatya's Maine Pyaar Kiya was named the Best Film of the year.  Vidhu Vinod Chopra's Parinda was the other big winner on the night.  This rivalry between Sooraj Barjatya and Vidhu Vinod Chopra resurfaced in the 40th Filmfare Awards, where once again Sooraj Barjatya's Hum Aapke Hain Kaun beat out Vidhu Vinod Chopra's 1942 A Love Story for Best Film.

Tamannaah filmography: Tamannaah is an Indian actress known for her work in Tamil and Telugu films.  Her first lead role came in 2005 at the age of 15 with "Chand Sa Roshan Chehra" in Hindi.  The same year she made her Telugu film debut with "Sri", and the following year she made her Tamil debut with "Kedi".  None of these films were profitable ventures.  In 2007, Tamannaah achieved her first success in Telugu and Tamil cinema with "Happy Days" and "Kalloori" respectively.  Her portrayal of a college student in both films received critical acclaim.  Tamannaah's performances in "Konchem Ishtam Konchem Kashtam" and "Kanden Kadhalai" (both released in 2009) earned her nominations in the Best Actress – Telugu and Best Actress – Tamil categories at the 57th Filmfare Awards South ceremony.  A series of commercially successful films helped her establish a career in Tamil cinema.

57th Filmfare Awards South: The 57th Filmfare Awards South ceremony honoring the winners and nominees of the best of South Indian cinema in 2009 was held on August 7, 2010 in Chennai, India.

Saif Ali Khan: Saif Ali Khan (] ; born Sajid Ali Khan on 16 August 1970) is an Indian film actor and producer.  The son of actress Sharmila Tagore and the late cricketer Mansoor Ali Khan Pataudi, Khan made his acting debut in Yash Chopra's unsuccessful drama "Parampara" (1993), but achieved success with his roles in the romantic drama "Yeh Dillagi" and the action film "Main Khiladi Tu Anari" (both 1994).  Khan's career prospect declined through much of the 1990s, and his biggest commercial success of the decade came with the ensemble drama "Hum Saath-Saath Hain" (1999).  He rose to prominence with roles in two ensemble comedy-dramas"Dil Chahta Hai" (2001) and "Kal Ho Naa Ho" (2003).

8th IIFA Awards: The 2007 IIFA Awards, officially known as the 8th International Indian Film Academy Awards ceremony, presented by the International Indian Film Academy honoured the best films of 2006 and took place between June 7–9, 2007.  The official ceremony took place on June 9, 2007, at the Hallam FM Arena in Sheffield, England.  During the ceremony, IIFA Awards were awarded in 29 competitive categories.  The ceremony was televised in India and internationally on Star Plus.  Actors Boman Irani and Lara Dutta co-hosted the ceremony for the first time.

Supporting paragraphs: 57th Filmfare Awards Saif Ali Khan
Answer: Saif Ali Khan