Beginning with what started here:
http://xixax.com/viewtopic.php?p=162230#162230Some of my faves:
Gia (yes it's an HBO 'TV Movie', but it's better than most biopics, especially for Angelina Jolie's performance)
The Buddy Holly Story
Raging Bull
Schindler's List
The Elephant Man
Ed Wood
Sid & Nancy
Bugsy
Blow
Basquiat
The Miracle Worker
My Left Foot
The People vs. Larry Flynt
Tucker: The Man and His Dream
Malcolm X
Nixon
What's Love Got To Do With It
Lenny
Rudy (sap, I know, but it always brings a tear to my eye)