Carousel, Samsung's custom home screen they developed for the non-US SGH-i600 (that's a Blackjack with WiFi, basically) has made the rounds before. Now that people are actually getting their hands on the little wonder, screen shots of the great interface are coming around again. Me Likee. I like it enough that I spent more time than I care to admit yesterday hunting around the web looking for somebody who has provided a ROM dump of the i600 so I could install this on my own Blackjack. No joy yet, but if you find something please let me know.
Basically, the Carousel/Card Wheel plug-in provides several decks which are accessed by using the D-Pad. Each deck contains grouped information which can be accessed straight from the Home Screen.