Jimmy Kimmel is celebrating a milestone, with some outlets reporting it as 20 years in late night. The celebration has involved special appearances and performances, including a recreation of a 2003 segment with George Clooney and Snoop Dogg, as well as a performance by Coldplay. The occasion has also drawn attention to Kimmel's long-running feud with Matt Damon, although the nature and duration of their feud is unclear, with different outlets reporting different lengths of time.