In pictures: Jonathan Ross at the BBC

7 January 2010 Last updated at 16:56

As Jonathan Ross announces he's to leave the BBC after 13 years, look back at some of the highlights of his career so far.
Jonathan Ross with Frank Skinner and Bob Monkhouse
One of Jonathan Ross's earliest appearances on the BBC was on comedy game show Gag Tag which ran for 14 episodes between 1994 and 1996. Ross is pictured with Frank Skinner and Bob Monkhouse.
Jonathan Ross on They Think It's All Over
In 1998 Ross began to appear on sports comedy quiz, They Think It's All Over. He ended up as a permanent panelist and stayed with the show until 2006. Other regulars pictured included David Gower, Rory McGrath, host Nick Hancock and Gary Lineker.
Jonathan Ross with Julian Clary and Phil Jupitus
Ross got involved with yet another comedy quiz format in 1999, It's Only TV... But I Like It. The show ran until 2002 and the regular team captains included comedians Julian Clary and Phil Jupitus.
Jonathan Ross
Ross, a self-confessed movie fanatic, took on a somewhat more serious tone in 1999 when he replaced long time host Barry Norman as presenter of The Film Programme.
Jonathan Ross with George Clooney
The respected film review show allowed Ross to interview top Hollywood stars and report on the annual Oscars ceremony. He's pictured here with George Clooney in 2000.
Jonathan Ross with Elton John
Ross also began his Saturday morning Radio 2 show in 1999. However, he caused uproar nine years later when he broadcast lewd comments about actor Andrew Sachs's grand-daughter.The BBC suspended him for three months.
Jonathan Ross with Red Nose
The presenter dons a red nose to lend a hand to the BBC's Comic Relief fundraising effort in 2001.
Ross on Friday Night with Jonathan Ross
Ross's biggest success has been his Friday night talk show, which has been a regular fixture since 2001. The award winning show has been a hit with viewers but the star will now leave the BBC in July when his contract runs out.
Jonathan Ross
Ross waves to reporters outside his London home in the hours after his announcement. The star insisted his decision to leave was not financially motivated and said it had been "a great 13 years at the BBC".