the only non-standard types of meat I've eaten are:
ostrich - wasn't impressed. supposed to be quite lean, but tasted fatty to me?
emu - I don't remember what this tasted like, I was pretty young
kangaroo - was much like lamb when I tried it. but the meat's a bit denser and less stringy in texture
crocodile - the texture of the white of a scallop, but the flavour of duck. was interesting
minke whale - I got sent a can by a friend in japan. the canned product had the texture of tuna and the flavour of duck. was a strange experience

I am yet to try goat that has been any good