I can summarize most of them for you.

"This really talented guy (or gal) made lots of money creating music, despite some handicap (addiction, psychological problems, blindness, etc.)."

Based on truth or not, they're about as formulaic as Adam Sandler movies.

But I enjoy them too ^^.

Sid and Nancy isn't formulaic.
Sid and mutha fuckin nancy

Sure it is, it's just shorter and they die in the end.

Yeah - you're probably right in stereotyping musicians there, Jestmeister. I hate to agree, but it is often times true.

Sid doesn't have much talent ( at least not in any traditional way), he accidentally becomes part of a band that makes tons of money- for other people. Then he and his girl die.

Not quite the formula.