The Jewish American model and actor, rapper and television personality Simon Rex Courtwright popular by his screen name Simon Rex was born on 20th July, 1974 to Paul and Barbara Courtwright at San Francisco in California,U.S.A.

Simon Rex’s promising debut in the world of entertainment started in an unusual manner with his roles of a masturbating man in pornographic films focused towards gay men. These films are titled Hot Sessions #3 and Young, Hard & Solo #2 & #3 which are directed by photographer Brad Posey. Rex is often billed as "Sebastian," and he sells for upwards of $1,000 on online auction website eBay.

In 1995, Rex was appointed as an MTV VJ but he subsequently had to give up his coveted job when his pornographic past was disclosed. Simon Rex was on air at MTV for over a year. However MTV allowed Simon Rex to leave considering the exponential increase in the popularity witnessed by pornographic video Young, Hard & Solo featuring Rex in the act.

In 1999, Rex again started legitimate acting career and got a break in the television show Jack & Jill. This show was critically reviewed and was cancelled after 2 seasons. Rex also appeared as "Eli" in the TV drama Felicity and made guest appearances in television series Baywatch, Summerland and Everwood. Simon Rex also made brief appearances in various films. The pilot for the American sitecom What I Like About You was picked up in 2002 by The Warner Brothers, however, Rex only performed in its first season and once again his work was criticized and consequently he was once again thrown out of the series, the series now continues with Amanda Bynes and Jennie Garth. Rex later starred on the Lifetime primetime serial Monarch Cove which had 11 successful episodes in 2006.

Destiny did not hold Simon for long and slowly but steadily Simon Rex made his mark on big and small screens. Some of the most popular roles played by Simon Rex feature in Scary Movie 3, Scary Movie 4, The Forsaken and The Karate Dog. Rex also acted in National Lampoon's Pledge This! With model and actress Paris Hilton in which the duo shares a hot sex scene on screen. Rex also shortly dated Emmy Award-winning actress and model Jaime Pressly.

Simon's rapping career is increasing its demand on social-networking website MySpace and on video sharing website YouTube where Simon Rex’s profile features as "Dirt Nasty". Rex tours with the group Dyslexic Speedreaders along with Andre Legacy and Hollywood rap artist Mickey Avalon. Simon holds considerable stake in the semi-private New York nightclub famous by the name The Plumm, along with Samantha Ronson, Chris Noth, and Noel Ashman.

Simon Rex enjoys playing Basketball and swimming in his leisure time, He also loves creating music on his computer and at times plays video games on Play station. He loves to listen to music some of his favorite forms of music are underground music, heavy metal, Hip-Hop, Rock and reggae. Simon Rex is also a fluent Spanish Speaker.