Nice. Don't know if you have seen this but there is a lot of good discussion here on SO: <a href="http://stackoverflow.com/questions/746082/how-to-find-list-of-possible-words-from-a-letter-matrix-boggle-solver" rel="nofollow">http://stackoverflow.com/questions/746082/how-to-find-list-o...</a>
There's an app for that: <a href="http://itunes.apple.com/us/app/scramble-cheats-for-scramble/id493773489" rel="nofollow">http://itunes.apple.com/us/app/scramble-cheats-for-scramble/...</a>