It's April 20 today, and no matter which story you believe about the origins of the number 420, we all know that for many out there it serves as a good excuse to bust out the, uh, glaucoma medication. That you totally got a doctor's note for. From some guy on the beach whose ID card read "Dr. Who."

In honor of 4/20/2011, we've got your list of the funniest flicks to watch today, sure to bring a smile to your face even if you've never inhaled. From high schoolers to hood rats, Latins to Leprechauns, check out our gallery for some stoned-cold craziness.