Billy Crudup could be Scott Stapp. Crudup was awesome in Almost Famous.
Maybe Skeet Ulrich as Brian Marshall.
Who's the dude who used to play the drunk brother on Party of Five? He could play Flip.
For Mark, I would pick Viggo Mortensen.
Silly monkeys give them thumbs
they make a club and beat their brother down.
How they survive so misguided is a mystery.