There are plenty of flaws here, and I'm going to spend some time pointing them out, particularly since the film receives so many 10's.
An 8 out of 10 may seem high, but if you're familiar with my reviews, you'll know that it's not that high of a score from me-it's closer to average from me. But I don't think that Casino is at all a 'perfect' film. I'm a huge De Niro fan, and I'm a fan of Scorsese and Woods as well. If you're at all interested in gangster/mafia films, or if you're at all a fan of director/co-writer Martin Scorsese, novelist/co-writer Nicholas Pileggi, or actors Robert De Niro, Joe Pesci, Sharon Stone or James Woods, then Casino is without a doubt a must-see.