It's convenient (in other words, I don't have to get off my lazy ass or anything).  I have an Xbox 360 so I'm kind of excited for the "Games On Demand" feature, Burnout Paradise's my 1st purchase cuz....well I already owned almost everything else in there on disk.  I hope newer games start coming out for it though.  XLBA starting to get better too now, with games like Shadow Complex, BF:1943, etc.