Hitfilm has released Hitfilm 4 Express for free. It is a simple editing program in the style of Premiere Pro, AVID and Final Cut Pro 7 (though not as full featured), with a full 3D compositing program built in. You can also buy individual expansion packs, or a full pro version for $399, which includes a Boris titling tool, and Mocha Camera Tracking as well almost 140 FX as plug ins for use in other programs!
I can’t believe I didn’t even know about this program, and am looking forward to giving it a try. Would love the Pro version to try some gunshot fx, that are rendered on the fly, so every one can be different. And for a fast full 3D compositor to be this cheap is impressive.