Fabulous job, Jamie! I love how the characters are in shadows except for their eyelids. Cool effect, and it's fun to guess who the characters are before you run the mouse over them.
All of the other characters are from TMS, but I'm wondering about that spider. Was that from SS? Miss Muffet sketch, maybe?
I believe the special Flash menus (other than the regular one) started with Halloween last year. Is this exactly the same as it was, or have updates been made? (It's great either way.)