This morning a brief reference to “challenging a Sicilian with death on the line” sparked the (somewhat daffy) thought that “Iocane Powder” would make a great band name. I'm not really surprised to find out that it's already taken. So check it out, there are lots of other Princess Bride-inspired band names:

Six-Fingered Man
Cliffs of Insanity
Rodents of Unusual Size
Dread Pirate Roberts
Inigo Montoya
Pit of Despair
Shrieking Eels
Unemployed in Greenland
I Am Not Lefthanded
The Spaniards (whose motto is, “I give you my word as a Spaniard”)

I'm sure there are more. I've decided my band name will be “Fezzik's Peanut”.

(thanks, Diana!)