I like the animations of the balloons specially the one showing his tongue :p The bonus games are almost games for its own :) i like cannonian boccia most!
@ Maziar thanks for the list
i can add a single game I recently found on the marketplace. Its a compelation of good old Game&Watch like Games and is called
POCKET GAMES
http://wp7applist.com/app/4351/Pocket+Games
Hope some of you like it too! ;)