I make an ass out of myself for gummy worms. I eat so many that they're flowing out every orifice of my body.
Personally, I always liked eating those large gummy rats as a kid. They always creeped out my mother, and my sister to some extent, but she bought me one for my birthday one year, bless her heart.
At my home town ice cream shoppe, they have dirt and worm flurries (Blizzard knockoff, only better). Crushed Oreos, gummy worms and ice cream. Really restores your faith in humanity when the chips are down.
Gummy worms are, for me, one of those foods that you know is going to make you feel like crap for hours after you eat them, but are just so damn good that you can't stop yourself.