I run graphics and compression on a PC and edit on a Mac. It's a great workflow and I already have a KVM switch, which allows me to use just one keyboard/mouse. But it's dead slow to switch back and forth, which I do a lot.
If anyone has a good quick KVM switch which can handle Mac/PC, I'd be very interested. I have Dell 2405 monitors, but currently leave them unswitched.
MacPro 2 x 3GHz dualcore; 2 GB 667MHz
Sony HDV Z1
Sony HDV M25U