From David Pogue’s recent post about iMovie ’09:

The killer app, though, is image stabilization. It takes a long time to apply to a clip–several minutes each–but it winds up making jerky footage smooth, even if you were filming while hiccuping on a camel ride during an earthquake. You control the degree of smoothness; that’s lucky, since 100 percent steady looks almost freakishly unnatural.

He also has an interesting take on Twitter.