Viral Marketing and the Movies

Does anyone know of a fairly recent viral marketing campaign that resulted in the highest viewed independent film of all time?

Anyone good at Trivia?

Enter your guesses in the comments below.

I'll give you a hint, the answer is not in the recent top eight movies searches on Yahoo
1. Superman Returns
2. The Grudge 2
3. Saw III
4. Spider-Man 3
5. Star Wars
6. Scarface
7. Texas Chainsaw Massacre
8. Spider-Man

and it's not on the top eight hot mover movie searches on Yahoo either:

1. Road Trip
2. Legally Blonde
3. Grease 2
4. Martin Scorsese
5. Tommy Boy
6. Casanova
7. The Crucible
8. Chronicles Of Narnia

The Ultimate Supertip is not a movie and did not break any sales records that I know of but the concept is purely viral and the results might change your life.