Charlie Kaufman screenplays:

Eternal Sunshine... (2004)
Being John Malkovich (1999)
Human Nature (2001)
Adaptation (2002)
Confessions of a Dangerous Mind (2002)

The last is the craziest and my favorite and George Clooney's directorial debut. I haven't seen Human Nature, which was directed by Michael Gondry of Eternal Sunshine. . .

Warning: Getting 'into' Charlie Kaufman could be like opening a Pandora's Box.