Devir Kahan points out the iPod app’s Album Art Swipe Trick:

You can actually just swipe anywhere on the album art from left to right to push the album art off the screen and slide back to the list view.

And since I’ve always considered the top left and right corners to be the least-accessible locations, Devir’s trick makes for a slightly easier way to get to the song list of the album you’re listening to if you want to change to a different track lickety split.

Update: Oisin Prendiville points out that you can double-tap on the album artwork to see the track list view.

Also From the Department of Things I Did Not Know