My doofy Diesel likes sour patch kids...
I was eating some once and he was staring at me...he didn't even know what they were. I don't like the orange ones, and I was feeling a little mischeivious, so I gave one to him, thinking he'd hate it and spit it out. Nope! Silly boy chewed it up very thoughtfully, and then sat and drooled for more!
Of course now he thinks that he's entitled to any and all candy that enters the house, so I have to keep it up on top of the fridge.