Emily Blunt, Jason Segel, Chris Pratt, and Alison Brie in The Five-Year EngagementTHE FIVE-YEAR ENGAGEMENT

Say what you will about the current state of movies. Yet in the history of the medium, have the actors who populate film comedies ever been as across-the-board-excellent as they are right now? It took about 20 minutes for this question to pop into my head during The Five-Year Engagement, and once it did, I'm not sure I ever stopped pondering it; from the stars to the supporting cast to the bit players who show up for all of three seconds, director Nicholas Stoller's rom-com features an embarrassment of performance riches. The movie itself? Eh, it's okay.

Eugene Levy and Catherine O'Hara in Best in ShowBEST IN SHOW

The genius of Christopher Guest lies in his belief that nothing is funnier than mediocrity. (He's the antithesis of Peter Shaffer's Salieri in Amadeus, who saw it as a tragic failure.) In his two finest cinematic efforts, This Is Spinal Tap and Waiting for Guffman, the performers examined in the "mockumentary" format - Tap's hard rockers and Guffman's thespians - were delightful because of their clueless self-satisfaction; they truly thought they were creating Art, or at least really kick-ass entertainment. And the joke blossomed every time we watched them perform their shows before audiences, because it turned out that these well-meaning hacks, while by no means terrific, weren't all that bad. They might have been lacking in talent, but their enthusiasm was infectious, and it made sense that their shows were hits. (God knows I've seen worse community-theatre productions than Guffman's Red, White, & Blaine.) Guest, who co-wrote both films and served as director for Guffman, was thereby able to poke fun at his characters and have you genuinely rooting for them at the same time.