If you're a user of Slacker Radio, head on over to the Android Market and update the app. (This one deals with permissions, so it won't update automatically.) There are a handful of bugfixes, but the big one for us is that you'll now get higher bitrates and larger album art when streaming over a 4G network.
And speaking of Slacker Radio, we've got a handful of free subscriptions of varying lengths that we're giving away. Hit up this thread in the Android Central Forums to enter.