(I'm almost certain someone made a thread on them, but I couldn't find it. If you can find it, post the linkage.)
They're good. Catchy. Maybe a little too bubblegummish for some.
Anyway,
http://www.rilokiley.net/ is your ultimate source for them, including tons of mp3s and videos.
Songs I like:
Portions for Foxes
Go Ahead
Wires and Waves
My Slumbering Heart
Yours (if any)??