Here's a couple of panos shot with one of those IPIX fisheyes NN has for sale. I think those fisheyes are the best deal ever for a compact camera fisheye. Shoot 1 straight up -- 4 around and 2 straight down and then do a patch for the nadir anyway you want.
These where shot at F5.6 -- focus real close -- maybe 2 meters away (2 yards) and then a little post processing and it makes a decent pano. Not as good as a full frame DSLR but what the heck -- not as expensive either. And a lot easier to carry about.
I left those big flares in just because I liked them -----