Halflings (shudder). Bad Experiences with halflings (and a few good ones).
The most recent bad experience was the halfling wizard who repeatedly charged into combat. Not buffed or particularly combat worthy, he just liked to do it.
Most recent good experience was the Stealth Halfling who was buds with the Half-Ogre. She hid in his hair for almost the entire game. When it came to be dinner time while we were conversing with some Bladelings, the half-ogre stuck some food in his hair to feed said halfling. Explained he was feeding the lice. They made a great team.