The idea behind the remote control was that somebody somewhere didn't want to get up to change the channel. Or was that the reason people had children? Either way, the Remote app for the iPhone steps the whole thing up a notch.
If you've got a good deal of music on your computer or your AppleTV, chances are you've got them hooked up to a decent set of speakers. Now while running iTunes directly or loading up your Apple TV isn't exactly a difficult task, it's always nice to be able to control them from a far. The Remote app allows you to do that very easily.
As long as both devices are connected to your internet, Remote will allow you to access the music and videos on either your computer or your AppleTV and give you a nice graphical interface to dig through. You'll be able to view all the music and videos on those devices as if you were using your iPod app on your phone, but the cool thing is, the music plays out of the computer or AppleTV.
There's not really any flaws with this app, and the fact that you need to authorize the remote on your actual system plus be on the same WiFi network means that your friends won't be blasting your Lit albums without you knowing. But how often is your computer really that far away from you?