The B&W is a great system.
After I sold my G5, and my iBook I had to switch back to that as my primary system for about a week until I got my MacBook. To this day I still use it to watch iTunes TV shows and Movies, many videos I have ripped for use on either my iPod or just watch videos on my computer screen.
It is still hooked up to my Surround sound system in my computer room, to which I connect my MacBook or other devices to listen to music, or watch videos taking advantage of that connection.
It also works great to record Internet radio streams using Garageband. I really am impressed with how well this system handles multimedia, but then again, these things used to be screaming fast back in their time too!
Current Config
Powermac G3 B&W REV.B
500 MHZ G4 ZIF upgrade
256mb RAM (Need to max it out still)
1x 120gb IDE hdd
2x 20 GB IDE hdd
OS X (Current version)
iLife 05