Putting this back where it belongs.
Some other traps:
Spring Attack: Cut your movement in half, attack once, and then get full attacked, all for the low cost of three feats! What's not to like?
Whirlwind Attack: Get lots of enemies to surround you, attack each of them once, and then get full attacked by all of them! What could possibly go wrong?
Bridget: The less said the better.