New Egg has the 320 GB Western Digital external hard drive for $105.99. These self contained USB 2 drives power themselves entirely from your computer (no messy power supply to deal with). I use them as a quick backup source for my iMac. They also make great spare hard drives for your laptop or desktop. Check out this site which shows how you can open up the My Passport and use it as a replacement hard drive for your MacBook Pro.
Wayne is a diehard Blackberry user and consultant specializing in Sage MAS90 Accounting Software. He lives in Glastonbury CT with his two children.
When not helping them with their homework or pushing the latest school fundraiser off on his co-workers, he is active hiking, Scuba Diving and investigating all manner of technology.
I picked up a 250GB model for my Macbook recently. I quite literally unpacked it, plugged the supplied cable into the hard drive and into my Macbook and the Macbook instantly detected it and asked if I wanted to use it for Time Machine. No fuss, no hassle, just worked straight out of the box!