Motion time lapse video
Here's a good example of some stunning footage captured with a DSLR mounted on a motion time lapse rig.
And here`s another video showing the rig that's used to make such time lapse videos possible.
This particular type is called the Dynamic Perception Time lapse dolly Stage Zero. The starting price is around $1000US for one of these. Of course on top of that you still need a DSLR, lens, tripod and plenty of time. The latter of which seems to be the hardest to come by recently due to the crazy wedding season.