pwesonally that is want i do. i use FCP 5 on my powerbook and quad. and while they are rendering i have my B&W there for casual usage, and internet stuff. frees up CPU usage on the powerbook a ton, and i'm not left without a computer to goof around on.

besides trying to encode video on a g3 would be HORRENDOUSLY slow. *sudders at the thought*

macDeviant
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2.4gHz 15" MacBook Pro, 1.66gHz Core Duo Mac Mini, 2.5gHz G5 QUAD, 733mHz Quicksilver, 450mHz G4 Cube, 700mHz G3 iBook, 350mHz Sawtooth G4, 350mHz Revs. A and B B&W G3, 16mHz Powerbook 100, 8mHz Macitosh Classic.