make your own Fisheye lens
Using only some sticky tape and an old pair of glasses, this tutorial over Photojojo shows you how to build a FishEye lens for your SLR and DSLR. Very cool stuff. Now looking into doing this. i have seen some very nice shots with Fish Eye lenses. A Friend of mine in work took some shots at the WRC event in Sligo, and there are some amazing photos.