Over the past weekend, I took three different timelapse videos of my flowering cactus over three separate evenings. The results are quite lovely. Each frame was captured as a 5.7 MiB, 1944x1296 pixel, "small RAW" file, I sized them down to the maximum HDTV dimensions of 1920x1080 before loading them into iMovie. In order to upload them with maximum quality to my .Mac account, the only place I know of that will host large videos, I had to use the new iMovie '08. As it turns out they only allow up to 960x540, which is really plenty. For iMovie '08, Apple completely rewrote iMovie to an overly userfriendly interface. It's the only video editing software I've ever seen that doesn't offer a "timeline" view where you can move video and audio around. This caused a great backlash (from me as well) at the time of its release, so Apple allowed the older version, iMovie HD, to be a free download to owners of iMovie '08. However, I must say that after using iMovie '08 today, it's really not that bad. They took away control over some aspects of the editing and provided more control in others. One thing that always annoyed me about iMovie HD was that once you added a text title to the movie, it was there for good, rendered and saved to each frame, and couldn't be edited. Not so in '08. You've already seen the first clip of the video. The third clip was a little disappointing because I mis-guessed that the flower was going to rise a bit during bloom, but it actually fell. So I spent ten minutes (one frame per minute, remember), slowly moving the camera down a millimeter between each shot.
If your bandwidth can handle it, I highly recommend watching this movie in high definition (you have to click "Large" to see it in 960x540).