Anyone who owns more than two Macs know it's a real convenience to be able to use target mode for transferring files. You just restart your MacBook Pro and hold T down and you're in Target Mode. This lets you copy files on and off the target computer as if the disks inside it were external drives.
The issue lately though is that MacBook Pro's when in Target Mode make a terrific amount of noise:
I have a new Santa Rosa MacBook and when started in Firewire target disk mode, the fan runs at a high rate all of the time. This is even when there is no disk activity. Is this normal?