Apple's Time Machine is a great system for managing client backups in a sensible way. Problem is, it depends on connectivity to a locally mounted disk, which doesn't really suit me. The reason it doesn't suit is because I don't want the constant hum of an extra disk drive while I'm working. Extra noise is bad. It also costs more to run, given that I have one or two servers powered up anyway.
For us europistanis, it's mightly irritating that by default, Macs come with a US style keyboard attached to them. It's irritating that there are pathological differences between latin-1 style keyboards in the first place, but who made the decision to swap keys like @ and "? What misery you have wreaked on the world?