Just found this over at phandroid, looks quite cool. KiteUI and slickUI are both home replacement apps.

http://phandroid.com/2010/12/03/kiteui-emerges-just-a-day-removed-from-tats-move-to-rim-video/

If you think they are cool you should try Netfront Life Screem

Just giving it ago right now

Have given it ago, its very nice but seems to have a lot of lag to it.