Trey Parker and Matt Stone are offering fans a chance to not only meet them and visit the South Park Studio (which I've heard is actually cleverly hidden somewhere here in Marina del Rey, unless they moved at some point) but also to be immortalized as one of the show's "random townspeople", complete with your own voice attached to your character.
You enter by making donations here, where you can also see a video of the guys describing the experience, which includes being an accessory to their procrastination. All donations go to NEXT for AUTISM, "a nonprofit organization that transforms the national landscape of services for people with autism by strategically designing, launching and supporting innovative programs."
Each donation buys multiple entries and some of the donations have additional prizes attached - $2,000 includes a signed South Park script, $5,000 includes an autographed Towelie skateboard or an outgoing voice mail message in either Butters or Kenny's (!!!) voice.
How bummed was I that these two were already sold out by the time I checked the site? Pretty bummed.