Simon Rex — MTV VJs Then and Now

Then: Before Rex scored a two-year hosting gig with MTV in 1995, he learned how to get comfortable in front of a camera in a trio of adult films, including 'Young, Hard & Solo #3.'

Now: Rex used his VJ fame as a springboard into television. In 1999, he snagged a recurring roles on the drama series 'Felicity,' and became a cast regular on the short-lived dramedy series 'Jack & Jill.' He's also landed movie roles in comedies like the spoof 'Superhero Movie,' the upcoming 'Scary Movie 5,' and '2 Dudes and a Dream' where he plays his alter ego, rapper Dirt Nasty.