I periodically buy things at the grocery store even though I have never heard of them and have no idea what to do with them. Actually, scratch that. I periodically buy things at the grocery store BECAUSE I have never heard of them and have no idea what to do with them.
Today's example is a Buddha's Hand Citron. I could tell by the smell (and the name on the label) that it was a citrus fruit, but I mostly bought it for its striking resemblance to a head crab from the video game Half Life. Either that or a Cthulhu beard. Cheese Boy described it in a previous thread ( http://Chowhound.chow.com/topics/474826 ) as 'a lemon that was adopted by a family of carrots and forced to grow underground'.
In any case, now I have a this thing and I'm searching and researching what to do with it, but I'm curious - do you buy random things at the grocery store just cause they're weird? Have you lucked into anything you really loved that became a routine part of your culinary repertoire? Anything truly heinous that you wish you could travel back in time and choose to not purchase?