Dustin Hoffman and Robert Duvall: Yes, Hoffman has lived with not one, but two future stars. While studying at the The Neighborhood Playhouse School of the Theatre in 1955, he shared an apartment with The Godfather actor. 

Tommy Lee Jones and Al Gore: The No Country for Old Men actor lived across the hall from the former Vice President as freshmen at Harvard University. Later as upperclassmen, the two crossed paths again when they lived together as roommates.
See more celebrities and picture of them together here: www.diamondodey..co.uk