i thought donald was the split personality of charlie. i never even really thought of him as a person throughout the movie unitl he started interacting with the other characters. he was the complete antithesis of charlie. also i loved how every time charlie had a "break through" it was something that already happened in the movie. i cant wait to see it again, except that i saw it in sf around xmas and it doesnt open in humboldt till jan 31.