I couldn't just pick one so heres a few of my Fav's

Scent of Woman, Donnie Brasco, Goodfellas, Risky Business, Any Given Sunday, Garden State, Carlitos Way

Man I could go on forever I have so many favorites, if you can't tell by the list I'm a big Pacino fan. I just wish he would take it back to his old days some of his most recent movies have been shite.