For all of the gross-out humor they've become famous for, the Farrelly brothers are essentially just big softies. Most of their movies—There's Something About Mary, Shallow Hal, Me, Myself, & Irene, and even Dumb & Dumber—are basically love stories. Stuck on You is the latest in that vein, though it's love of a different kind. Stuck on You is about brotherly love, something the Farrellys probably know a lot about, having written and directed seven films together.
Matt Damon and Greg Kinnear play Bob and Walt Tenor respectively, twin brothers joined at the hip and sharing a liver, which makes it too risky to attempt separation. They run a burger joint in a small town that has grown accustomed to seeing the two always together, but Walt dreams of becoming a serious actor. He quickly convinces Bob to join him on his Hollywood crusade, despite the fact that Bob suffers from severe stage fright and has frequent panic attacks.
The Farrelly brothers have often succeeded in enlisting A-list, typically non-comedic talent in their films like Gwyneth Paltrow, Cameron Diaz and Renee Zellweger. This time, they've scored Damon and Kinnear, who both seem more than comfortable in the goofball comedy realm. Bob is the responsible one, and Walt the dreamy misfit, but both characters are always sympathetic. Thanks to the actors' charisma, you're constantly rooting for their farfetched success. There's also a small list of celebrity cameos that I wouldn't dare give away, and an entertaining supporting turn from Cher, who surprisingly for much of the film, portrays herself as the villain.
The film would be too sentimental if it weren't so filled with laughs. The Farrellys have cleverly inserted every possible conjoined twins joke. But the film never really makes fun of Bob and Walt. Most of the humor comes from how easily they work around their birth defect, and even use it to their advantage. (They make quite an invincible hockey goalie.)
This is easily the best Farrelly brothers movie since There's Something About Mary. Go see it for a lot of laughs and a few tugs of the heartstrings, or just for novelty of seeing Matt Damon joined at the hip with someone other than Ben Affleck.