From Wikipedia, the free encyclopedia. Ross Aaron Malinger (born July 7, 1984) is an American actor who co-starred as Jonah Baldwin in the 1993 romantic film Sleepless In Seattle. He starred in the 1997 comedy Toothless, along with Kirstie Alley, portraying the second main character of the film. He starred with Kirstie Alley before that in the 1996 film Peter and the Wolf and played Adam Lippman, the Bar Mitzvah boy who liked Elaines Shiksa appeal, in the Seinfelds episode The Serenity Now. Malinger co-starred with Jean-Claude Van Damme in 1995 film Sudden Death. Though it was a box office flop, he earned $1.1 million, a contrast from Sleepless in Seattle for which he only earned $24,000 even though it launched his career. He provided the original voice of T.J. Detweiler on the animated series Recess. He did not reprise the role in the next seasons, as he got replaced by Andrew Lawrence. He was a recurring character on the Teen Drama Party of Five.