I just came across a new (?) addictive computer game. (I'm not sure if it's really new, but I never heard of it before
It is called Bookworm, and the aim of the game is to find as many words as possible in a field of random letters (the longer the word is the more points you get).
The game can be found here
I got up to level 10 (I think it was called Librarian) and my longest word was "scrolled"