Matt Damon and Leonardo DiCaprio. I don't know why but I have for years and I bet if one of them shaved and the other grew out, they'd look the same. Especially in The Departed. So what about you?

I get Justin Beiber and Ellen Page mixed up

^

That first reminded me of how I felt about Brad Pitt and Matt Damon back in the day. Same goes for Skeet Ulrich and Johnny Depp.

And Bieber and Ellen Page, Spaced--hilarious.

Alright, now I believe it-

I always call John Michael Higgins "Fake Glen Gulia"

Not really a celebrity confusement, but I always call Jason Bateman by the title of the character in American Psycho, Patrick Bateman. I mess up and say the latter for Jason a lot.