Wow! I came upon this thread just as I was listening to Happy Hippo! That was the first Cloud Cult song I ever heard, I saw it on Napster (new one, not the old one) and had to give a song with a name like that a try. It's got just enough electronic stuff to satisfy both of my music sensibilities (rock with solid vocals and electronic blippy bloopy stuff). So naturally from there I listened to the whole cd (Advice from the Happy Hippopotamus) and really enjoyed it! Moving to Canada, Living on the Outside of Your Skin, and Car Crash are others that stood out to me.
For any Princess Bride fans (gotta be a few here!) you have to check out the song "Princess Bride" off of Aurora Borealis, it uses samples from the movie in a pretty cool sounding way.
I'm psyched for when they go on tour in April, I seem to remember they're going to pop up somewhere in boston (middle east maybe?) in April/May.