This lens is not broken..

...well, actually it is, but it is 'fixed'.

Ok, long story short: a friend of me broke his lens, and fixed it by making it into a Tilt-shift lens. Basically, you replace the hard plastic that keep the lenses ridgid with soft stuff, so now you can 'bend' your lens. This wil, for one thing, give you a non-straight focal plane.

It is quite hard to use, and i haven't played with it very long, so i don't have any good-looking shots to show, but this is a nice example of the technique. The foto has not been editted in any way, and you see the focal plane going from the right bottom to the left top side.