He cries holding dead bodies and makes death bed promises (Moulin Rouge and Star Wars):
"Promise me you'll write our story"
"Promise me you'll train the boy"
He's a penniless writer typing on his typewriter (Young Adam and Moulin Rouge):
He has sideburns that manage to look good on him (all 4 movies):
Edward Bloom (and Steve Buscemi, too)
He tells the truth from "a certain point of view" (Star Wars and Big Fish):
"Lukey, Darth Vader betrayed and murdered your father."
Umm...the entire movie.
He works with Steve Buscemi (The Island and Big Fish):
Also, Joe, who unrepentantly has sex with just about every woman he meets (married or not), could be a young Tom Lincoln before he goes to America and becomes greatly sucessful (The Island and Young Adam):
"Lots and lots of sex. :D"
"Hello, random girl. Want to have sex behind those rocks over there? :D"
Pictures mostly from Best of Ewan McGregor (obviously) and EwanMcgregor.net. The one of Joe on the typewriter I snagged from moowithme113's entry since it was the perfect shot (I hope you don't mind!).
Feel free to add more! :D