Last week my brother in law's laptop refused to boot windows.
He brought it over on Saturday and I booted off the HH live cd and copied all his stuff onto my NAS.
There was a LOT of crap on his laptop (spyware and viruses it looked like).
I then installed HH, opera and the flashplayer on his laptop and said "here you go, your password is xxx". I showed him synaptic and made sure that hibernation and the wifi card worked and sent him home.
So far, I've not heard any complaints yet :)