Tried out Rock Band during Christmas of 2007 at a buddy's house. No one wanted to drum, so I gave it a shot. Fell in love with the instrument and the game, regardless of how many times I had to play through Weezer, Radiohead and the initial setlists anytime a new band was formed.
Fast-forward to now. I've owned a setup myself for both Wii and PS3, and I still play regularly. Haven't become an expert on the drums, but I hope one day to be able to breeze through 'Panic Attack' and 'Beast and the Harlot'... eventually.