The (main) hard drive on my MacBook Pro failed. Refused to even mount, so the machine wouldn't boot. (Aside for anyone who read my other post: The problem was a confusing one at first as after some messing with Disk utility, it did mount and AppleCare suspected a software glitch, so we wiped the drive and reinstalled OSX but then the problem came back. At that point I took the MBP to an Apple store and they hooked it up to their diagnostic software. That plus examination of the logs led them to diagnose a faulty hard drive.) Got the drive replaced (temporarily with a 750Gb one as my supplier doesn't have any 1Tb drives in stock), reinstalled OSX, plugged into my Time Capsule, did a Migration (rather than a Restore in case the drive had corrupted any system files) and a few hours later the machine is back in action with all my data, apps and (most) settings intact. Unlike Restore, Migration Assistant doesn't recreate absolutely all settings, but pretty damn close. It only took 20-30 mins to sort the few remaining bits & pieces. Thanks to Time Machine, the whole thing has been a nuisance rather than a crisis. Yes, there are other backup options around, but with a Time Capsule I don't ever have to think about it - the machine is always backed-up.