The GoPro Hero 2 has a wide angle lens with 170 degrees and 10 megapixels. The latest edition black model has other bits and pieces to make it more versatile. Priced around $400 up.
Another possibility would be to get a Pentax K-01 with the 10-17mm fisheye to 28mm equivalent zoom (love this lens.) This would be smaller than a full on DSLR but still much heavier than a point and shoot and not pocketable.
I too would love to have a compact fisheye to wide angle zoom compact. Hey makers - there is a niche market out there. That way, just the 2 cameras do almost everything a normal photographer would wish to do.
I have not seen reviews for the GoPro in terms of IQ, but I could not imagine it is anywhere near a DSLR.