Probably I do not have too much of a clue of photography and cameras and lenses and probably I also lack the necessary equipment to stitch together really cool panoramas. But I've tried anyway, and doing that I learned a lot about all of this lenses-stuff. The first tries can be found here as well and are probably easy to find in the meanwhile rather large collection.
All of them are created with some really professional program, helping me a little: PanoTools. With a nice GUI and a few rainy afternoons in front of the computer the following results came out up to now: