The programme depicted Lemon flying to six different countries around the world, in a shark-shaped flight plan, meeting various celebrity guests along the way.
The series premiered on 11 March 2008 on ITV2, and pulled in very successful ratings.
The show also featured Francis' other three main characters, Avid Merrion, Barry Gibson and a human version of The Bear.
, where he was introduced in a regular role as the agent of Avid Merrion, the main character, also played by Francis, after Avid gets himself his own television show.
Lemon's face was not shown to camera during this series, but was instead obscured by various objects in the manner of Wilson from Home Improvement. spin-off A Bear's Tail, which focused entirely on the character of The Bear.
On 21 November 2011, the first Celebrity Juice DVD was released, entitled Celebrity Juice: Too Hot for TV.
During the year, Lemon also promoted Tacheback, a campaign to raise awareness of male cancer.
Lemon first appeared as a recurring character in the Channel 4 impersonations series Bo' Selecta! During the show's first series, aired in 2002, he made one appearance, which depicted himself in a trendy wine bar attempting to chat-up Tess Daly.
Lemon later appeared in the third series of Bo' Selecta!
Special episodes during the year included an Up the Duff special, a Pop music special, an episode dedicated to the Royal Wedding, a Coronation Street vs. The sixth series also introduced another of Lemon's infamous activities, "Motting".
Emmerdale special, a Back to School special, a Girl on Girl special, an episode dedicated to Ant & Dec, and an I'm a Celebrity... In March 2011, Lemon hosted six episodes of ITV game show Sing If You Can with Stacey Solomon, after original intended host Vernon Kay pulled out.
Each episode will also finish with Keith performing with his celebrity guests." Although the pilot was not commissioned, the idea for the latter production Lemonaid was born.