One of the new techniques I've learned from Sam's workshop is free lensing. With this technique you dismount the lens from the camera, shooting from live view on the camera. By changing the distance of body/lens and tilt/shift the lens, the direction of the depth-of-field is slanted instead of in a straight line of the lens. This way some details in the photo can be preserved, otherwise they would have been blurred.
This same effect can be achieved with a tilt/shift lens, but the advantage of free lensing is the total freedom and you can make use of the light leaks for more creative photos. Have a look at some examples.
Quite soon after the workshop I've found a really nice vintage Mamiya Sekor 50mm f/2.0, which turned out to be a really good lens for free lensing.