30. John Travolta

30 Celebrities Photoshopped Side-By-Side With Their Younger Selves By Ard Gelinck (New Pics)
Rosie Hamilton

Yet he's finally admitted he's bald and ditched the hairpieces.
Rosie Hamilton

How to make disco moves popular? Just ask John Travolta to perform them in a cult movie Saturday Night Fever! And even if you're not so hot on disco, his portrayal of Vincent Vega in Tarantino's Pulp Fiction cemented Travolta's status as a diverse and professional actor.