I have great success capturing tremendous loads of video with my G3 400 Powerbook into a firewire drive, using Final Cut Pro, an ADS Pyro firewire case, with a maxtor 60GB drive--basically a typical firewire drive, which, btw, only cost me $380 for everything.
The transfer rate is about 14mb/sec. which is comparable to the standard g4 internal. All you need for DV editing is about 4mb/sec. transfer rate.
And I guess the firewire drive should even work with OSX beta, but I haven't fired up the drive--yet
This OmniWeb OSX browser is interesting, though...