14 of 15:
Lorenzo Lamas as Tom Chisolm
Lamas, son of actor Fernando Lamas, played Sandy's jock friend Tom Chisolm in the film.
The actor gained notoriety by starring on the popular 1980s soap drama 'Falcon Crest' as Lance Cumson alongside actress Jane Wyman.
Lamas went on to star as Reno Raines in the syndicated series 'Renegade' from 1992 to 1997. He returned to soap opera acting in 2004 when he appeared as Hector Ramirez on 'The Bold and the Beautiful.' He left the series in 2007 and began working in theater with roles in 'The King and I' and 'A Chorus Line.'
Lamas has been married five times, most recently to Shawna Craig. The two wed in Mexico on April 30, 2011. Lamas is also the father of six children, the youngest being a daughter, Isabella Lorenza Lamas, born in 2001, with ex-wife Shauna Sand. His oldest is son, Alvaro Joshua 'A.J.' Lamas born in 1983, is also an actor.
(Pictured: Lamas appears in 'Grease' on the left and in a promotional photo from his appearance on 'The Bold and the Beautiful' on the right.)
( Photo / Paramount / CBS)