Yancham/panda - I love this! I have been thinking for the past few months about wanting a panda pokemon, and we got one! Although I had thought of normal/dark typing for it, fighting works too. Excluding fire/fighting starters, there haven't really been any fighting types I really liked except for Lucario and Mienshao, so it will be nice to add another one to that list.
Gogoat/goat - Looks pretty cool, and that new riding feature looks interesting, can't wait to find out more about it.
Yayakoma/bird - I have mixed feelings about this, at first I didn't like it all that much, but another part of me thinks it doesn't look too bad, just some getting used to.
Elikiteru/lizard - yay for a new type combo, but I have slightly mixed feelings on this too. I thought it looked weird at first and didn't like it, but now that we have the clearer image I guess it's okay. Maybe I'll like its evo better.
Overall I mixed feelings about them (except the panda), but then, when B/W were first revealed, there were only a few pokemon (like Blitzle) that I really liked, and the rest I didn't; but over time most of the B/W pokemon really grew on me. So hopefully the same will be said of this generation.