My new favorite iPhone app is the remote

I've been a little slow getting on the iPhone kick. I've had my iPhone for a bit and I love it, but haven't really explored the apps yet. But, Friday night on the train on the way home, I started messing around in the apps store and found the REMOTE! Holy cow, how cool?!? I've got my Mac now almost constantly plugged into our surround sound system and control all of my itunes using the REMOTE on my iPhone. How did I live without this before? Seriously, I don't think that I listened to music as much as I have in the last two days. We had friends over last night and it was so nice to be able to run our little party mix from anywhere in the house. The best things in life are free!