Sunshine of Your Love
It's no wonder Eric Clapton has been inducted into the Hall of Fame three times (once with Cream, once with The Yardbirds and once solo. No Derek and the Dominoes, I guess).
Anywho, he's so awesome. I learned how to play Sunshine of Your Love on the guitar tonight. It didn't take long at all, and it's a great tune. The drummer in the video hyperlink I included is acting bizarre, and it's pretty hilarious. He definitely has to be on acid, or some such halucinogenic substance.