Personal favorite on the sour side was "Warheads"... I would eat them until my mouth hurt. It has been years since I have been able to get my hands on them (not widely available here), but I do usually buy a few packs when I visit the US and keep them around for when a snack craving hits.
Liven up any gathering with the Jelly Belly BeanBoozled challenge. Find out if you can tell the difference between tasty and gross during this wild & wacky jelly bean game.