Got this email from my father the other day:
Just to let you know that I think Linux is just great. I plugged in the old Cannon Printer and the HP 3300C Scanjet and they both worked without a hitch.
I think I installed 5.04 on my fathers laptop a few years ago. I upgraded him to 7.10 the other month (he would have been able to do it himself but I had to flash the bios to get rid of a password and enable CD-ROM booting). The only additional application he needs to add is Gramps (Genealogy). From the perspective of someone wanting things to "just work" each release has been definitely been getting better.