The short list:

Drivers who pull out of side streets in front of me, then drive slowly.
Sloppy Joes
Cole Slaw
Movies that appear to hurt animals
People who actually hurt animals
Anything gelatinous, except the Gelatinous Cube in D&D
Sadistic nuns
Women who pick at their meals to show how delicate and uninterested in food they are
Smart cars
American women walking around our streets in full Muslim garb. Go live where that's required
Joy Behar
Bugs. Every bug that has ever lived, lives, or will live. Except Inchworms, if they are bugs.
That new girl on NCIS