So there was this guy at a camcorder forum, asking what he can do to use his 24p HV20 footage with iMovie HD on the Mac. Well, bad luck, iMovie does not support 24p timelines, and even worse, not even Final Cut Express HD does. To get 24p editing support on the Mac you have to either pay $1200 for Final Cut Studio or $1600 for Adobe After Effects/Premiere CS3.
So, I gave him the following advice: go buy a Dell PC, as I was able to configure a powerful video editing station right now for $520 (without a monitor), and then buy Sony Vegas Movie Studio 8 Platinum for another $100 in the open market.
So basically, for almost HALF the price of what you would pay on the Mac to have access to 24p editing, you get a dedicated video station with the right software.
Ok look, I like the Mac, but this is just sad. Hopefully Apple will add 24p support on the next Final Cut Express HD.