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Michael Tucci - Sonny
At the age of 32, Michael Tucci played T-Bird Sonny LaTierri.
After the film's release, Tucci went on to play a Gerald Golden on 'The Paper Chase' form 1983 to 1986. He then starred on 'It's Garry Shandling's Show' as Pete Schumaker for five seasons.
He went on to play Norman Briggs, a hospital administrator, on 'Diagnosis Murder' alongside Dick Van Dyke for four seasons. Tucci has also had roles in the movie 'Blow' and the television series 'Once and Again.'
(Pictured: Tucci appears in 'Grease' on the left and 'Diagnosis Murder' on the right.)
( Photo / Paramount / Viacom Productions)