Simon Rex is an American actor, television personality and rapper best known for his television roles as Michael 'Mikey' Russo in Jack & Jill (1999-2001) and as Jeff in the first season of What I Like About You, from 2002-2003.
Rex had an auspicious entrance into the world of entertainment when he appeared in some hard-core pornographic solo scenes in a series of straight-to-video gay porn releases.
Though he initially found mainstream fame as an MTV VJ, his past came back to haunt him and cost him that job.
A series of television flops followed, speckled occasionally with a supporting role in films.
Some mainstream credibility returned after a stint on Felicity (1998) and eventually an acclaimed comedic turn as a spoof-on-Eminem rapper in Scary Movie 3 (2003).
He is also a rapper, known by the name of Dirt Nasty.