Movies where celebrities play themselves

Name some movies where a celebrity plays a fictionalized version of themself, which may or may not be an accurate portrayal. They should appear as a character, not a cameo.eg.Mike Tyson in "The Hangover"John Malkovich in "Being John Malkovich"Neil Patrick Harris in "Harold & Kumar Go to White Castle" via /r/movies https://ift.tt/08PkK1F