In 2005, he co-hosted "Comic Aid", a one-off gathering of comedians that aimed to raise money for the Asian Tsunami Appeal. In May of the same year he appeared on the "Star in a Reasonably-Priced Car" segment of the BBC Two series "Top Gear", achieving a lap time of 1:53.5 (52nd on the Suzuki Liana leader board). His series "Lead Balloon", which he also co-wrote, began on BBC Four on 4 October 2006. Described as "Britain's answer to "Curb Your Enthusiasm"", "Lead Balloon" sees Dee play the semi-biographical role of Rick Spleen. A second series of eight episodes was commissioned and was broadcast on BBC Two in 2007, with a third series debuting on Thursday 13 November 2008. A fourth series finished on the BBC on 5 July 2011. He also starred as Harry in the 2005 film "Short Order".