All of NUAMPS now have their own personal backup hard drives. After having two hard drives crash within two weeks we decided that everyone needed to have their own backup solutions for more than just email and documents.
Everyone on our team has at least a 500GB LaCie Rugged drive or a 1Tb Western Digital drive. Almost everyone is using TimeMachine which is part of OSX 10.5, but Carbon Copy Cloner and SuperDuper are great backup tools as well!