3D track motion. Hang your object in 3D space and rotate around it. You will spend a lot of time rendering but the effect is good. This is easier to do in After Effects, but I definitely can be done in Vegas.
What I was trying to accomplish is rotate a 2d film clip in a 3d workspace so that the 2d clip always faces the camera so I need to rotate camera and clip at same speed so that the clip looks 3d
Maybe some one out there can recall the tutorial Ulf mentioned?
Icarus used to be the free tool for this. Version 2.09 was the last before it got merged into something else. You might still find it kicking around somewhere.
I think this may be the product that evolved from Icarus, but I'm not sure: