Plenty of films with that rating. Just a few off the top of my head:

http://www.rottentomatoes.com/m/citizen_kane/

http://www.rottentomatoes.com/m/godfather/

http://www.rottentomatoes.com/m/chinatown/

(Note: I haven't seen The Social Network and I don't mean to imply that it is comparable to the iconic movies I have listed above. That said, the more reviews I see trickling in, the more it seems like it.)

Toy Story 3 did that too.