JD, a member of the weekly after-podcast hangout club, asks this one. We all were excited about live wallpapers when they came with along with 2.1, and have become pretty synonymous with Android. There's thousands to choose from, more than a few good ones come pre-installed on most phones, and it's always one of the first things hackers try to rip from leaked ROMs and new phones.
On the other hand, they can be rough on performance and battery, so a good many folks don't bother. Which are you? Let us know in tonight's poll!