I'm still set on getting some type of Tilt Shift lens (eventually), but if you just want to experiment putting some videos together you can do this without an actual Tilt Shift lens. One of the popular tricks is to shoot far. Really far. Here's an example of a Tilt Shift video I posted that used post processing software to create the effect: http://cheesycam.com/tilt-shift-without-the-tilt-shift-lens/

Here's another example from Vimeo member Mark Rigler. In order to get these shots, he used an inexpensive Samyang 500mm mirror lens. Afterwards, the Tilt Shift effect was added in post.

Sounds like a monster telescope, but mirror lenses use a technique to multiply the image inside a small form factor. The cons to using this technique is some softness and loss of light and the best of the best Mirror lenses at 500mm might be about F/6.3. The pros are you're able to get a crazy distance in a lightweight lens for super cheap. These lenses are often rebranded so Samyang is just one name. You can also find them in Rokinon, Vivitar, and Bower. Imagine using this lens on a GH2 or T3i with new Cropped modes - Crazy far!

Cheap 500mm F/6.3 Mirror Lenses