Oh yeah, I also used coca tea and yerba mate in a test batch... unfortunately that was my only batch to get infected. I want to give it another shot but haven't gotten around to it... might just go with the coca next time since it's less jittery than the giant caffeine dose you get from yerba mate, plus the mate flavor is really strong.
I like the idea of rating them all.
Bacon (dry porked) - horrible at first, but mellowed to a nice level and turned out to be pretty good but a little salty. A novelty worth trying, but I won't do it again. It was awesome mixed with a maple syrup beer, tasted like breakfast.
Doughnut - my friend wanted to make a blueberry donut beer so i insisted we throw an actual donut into the mash. The donut didn't affect things much but the beer turned out quite good, surprisingly so considering it was something like 22% crystal and had a lot of lactose in it. He served it with cinnamon sugar on the rim for a novelty.
Peanuts (mash) - peanut butter and jelly beer, inspired by an offering Cigar City brought to the Extreme beer fest after a conversation with one of the brewers. Turned out AWESOME even with some sort of wild yeast infection from the mixed berries which made it slowly get more tart over time (a good thing if you ask me). The berries kind of dominated it but after eating something salty the peanuts were more noticeably present. It smelled just like a PB&J sandwich too.