If You Only Had A Living Brain
An Interesting Monster
Never Send A Monster To Do The Work Of An Evil Scientist
And as a bonus, I have the opening to Bugs Bunny's Howl-Oween Special. This special is generally considered to be pretty bad. It's clips from the classic cartoons slapped together to make an hour special with newer and inferior animation added to make a story... I thought this opening was pretty good and Halloweeny though.
Opening for Bugs Bunny's Howl-Oween Special