Hm, I should have a shortish list from that Tae-Kwon Do camp a year or two ago...
Sheep brain (creamy, slimy)
Chicken heart (next to no flavour, win texture)
Ox kidney (don't remember)
Black Pudding (look it up)
Pig Tongue (like pork but better (and a bit hairy (

(whee bracketfuck))))
Hagass (i think that's how you spell it...)
I think I missed a couple, but oh well.
Also at the 'buffet' was raw chicken feet and pig anus...
Oh yeah, apparently there's an incoming world meat shortage that'll come into effect around 2020 or so... and 'experts' (on the contrary, we all know how untrustworthy they are (you know, the whole michael atkinson 'gaming is worse than smoking' bullshit (whee bracketfuck))) say that eating insects is the best option...
Huhu grub sandwich, anyone?
(wait, did i just bracketfuck twice in a single post? (oh yeah, i did... (the irony)))