 He told the press that Ekta's "Mahabharat" is sure to be a flop because BR Chopra's "Mahabharat" had actors in it; her "Mahabharat" has "models" in it.Throughout his acting career he appeared in several TV series like Bahadur Shah Zafar(1986), Mahabharat (1988 TV series), Yug (TV series), Chandrakanta (TV series), Mahayoddha, Virat , Shaktimaan(1997) , Aryamaan – Brahmaand Ka Yodha(2002) & also many commercially successful movies, including "Saudagar" (1991), "Yalgaar" (1992), Saugandh, "Tahalka" (1992), "Shaktiman" (1993), "Main Khiladi Tu Anari" (1994), "Barsaat" (1995), "Raja" (1995) Policewala Gunda(1995) , "Veer" (1995), "Himmat" (1996), "Maidan-E-Jung" (1995), "Judge Mujrim" (1997), "Hera Pheri" (2000) and "Plan" (2004).In 2007, Khanna participated in a child development project funded by the government, Shaktimaan, which targeted at preventing malnutrition, lowering the mother-child mortality rate, anaemia in girls and health awareness.