'Movie 43'

No one really knows what 'Movie 43' is about. In fact, the synopsis on the IMDb page states that it's a "feature film comprised of short comedy segments." Each segment has its own director (among them, Steve Carr, Steven Brill, Bob Odenkirk, Brett Ratner, and, interestingly enough, Elizabeth Banks). So, why include this on the list? Because of the ridiculous cast. 'Movie 43' stars Kate Winslet, Uma Thurman, Hugh Jackman, Gerard Butler, Emma Stone, Chloe Moretz, Kate Bosworth, Elizabeth Banks, Kristen Bell, Anna Farris, Josh Duhamel, Naomi Watts, Jason Sudeikis, Justin Long, Liev Schreiber, Sean William Scott, Patrick Warburton, Johnny Knoxville, and a whole lot more. Despite the bad rap ensemble comedies have gotten in recent years (ahem, 'New Year's Eve'), this may be one that's actually worth watching.