I've seen National Lampoon's Animal House so many times that at some point I'm going to start replaying the movie in my sleep. Give me the chance and I'll discuss it the way Ebert talks about the collective works of Martin Scorsese or Woody Allen. (Don't worry: I'm saving my rant for my submission to Film Comment.) If there were a Faber College, I'd be applying there for graduate school.

So, yeah, I'm a bit of a fan.

My passion for the movie aside, National Lampoon's Animal House, celebrating its 30th anniversary this year, has become a pop culture milestone. Every guy has seen it. Hell, even William F. Buckley was a fan. It's not like this is some undiscovered comic chestnut. Keeping track of the comedies that have tried to replicate Animal House is like cataloguing George W. Bush's political blunders.

So, why does Animal House work? For all of its toga parties and homecoming parade nuttiness, it's got an awesome supporting cast and a great script. Don't underestimate those two factors. Physical and obvious comedy has its limitations. The Three Stooges' shorts are hilarious -- five to ten minutes of genius physical comedy. But can you name one of their movies? Did you ever try to watch two straight hours of Stooges, and not just the ones with Shemp and Curly? That's some heavy labor right there.

John Belushi is terrific as Bluto, the ringleader of Delta Tau Chi, the zaniest fraternity at Faber Collect in the early 1960s. He deserved every bit of stardom that came from that role, scoring laughs with raised eyebrows and facial expressions alone. But the movie is really an ensemble piece, and an impeccably-cast one at that. Nearly every supporting actor scores, from the high-profile (Donald Sutherland: "Now I'm waiting for reports from some of you... Listen, I'm not joking. This is my job!") to the barely there (the late, great Douglas Kenney: "What the hell are we supposed to do, you moron?").

There's no way the movie works without the perverted élan of Tim Matheson as campus lothario Otter, or Peter Riegert as Matheson's cohort Boon with his wry sarcasm. Wouldn't the movie feel a little creepier without Karen Allen's fresh-scrubbed charm to brighten things, or Tom Hulce's sexual naiveté? What about Stephen Furst -- looking like he spent his life getting pummeled in schoolyard battles -- as the beleaguered Delta brother Flounder? What about villains such as John Vernon, Kevin Bacon, or Mark Metcalf? Great, great, great.

Now compare that cast to a movie like Road Trip, which strived to be Generation X's Animal House. Here's a partial list of the talent on hand for that movie: Tom Green, Paulo Costanzo, Breckin Meyer, and Amy Smart's breasts. It's no contest. Even American Pie, a movie I love, didn't have Animal House's acting depth.

Nor did either movie have Animal House's writing. I'm not talking about the great lines, which are probably being shouted in bars and dorm rooms as you read this. Writers Kenney, Chris Miller, and Harold Ramis actually create identifiable characters. We all wish someone as self-assured as Otter was our wingman. Guys crave a girlfriend as lovably tolerant as Allen's Katy, albeit one who isn't so handsy with the English department. When buddies Flounder and Pinto (Hulce, looking like he's 12) fumble and stumble at their first fraternity meet-and-greet, it's an encapsulation of every awkward social memory. Pair that kind of care with great comic acting and fantastic dialogue and you're watching it even though you're 20 minutes late for your job interview. Damned if you're going to miss the horse dropping dead.

It's mystifying how many comedies just throw laughs on the wall to see what sticks, instead of following the proper formula. Some directors try to go the extra mile. Judd Apatow does a good job, but I fear his movies are veering more toward the dramatic. Christopher Guest does it with some success, and Kevin Smith excelled at it before he lost his touch forever with Jersey Girl. The difference between execution and theory makes Animal House a classic, togas and all.

Of note is the new Collector's Edition DVD, which features a 45-minute present-day interview with the cast and crew about the making of the film, plus behind-the-scenes footage of the production. A gem.

Aka National Lampoon's Animal House.