They say to keep your friends close and your enemies closer, but in the Goodfellas gang, friends and enemies are often one and the same. As far as mob movies go, Goodfellas is unquestionably one of the best. It has a level of truth, trust and friendship that you might desire for your own life — you know, minus the violence — along with a healthy dose of betrayal and a glimpse of glamour. Based on the book Wiseguy by Nicholas Pileggi, Goodfellas follows the true story of three generations of gangsters from the Lucchese crime family as they attempt to move up the chain of command, offing anyone who gets in their way. While the fellas — played by Robert De Niro, Ray Liotta and Joe Pesci — are just as likely to work together as they are to stab one another in the back, their bond also offers lasting lessons on family and friendship that we can all take to heart: “Never rat on your friends and always keep your mouth shut.” Of course, in the mob’s world, you’d be killed for doing otherwise, but still, Jimmy’s (DeNiro) words are really what loyalty is all about — and in a bromance, nothing is more important.