I got a new laptop earlier this year, had Win98 preinstalled. Then upgraded it to Win2K, and now to XP Pro. There's also Office XP on it. It also dual-boots RH7.2, which amazingly hasn't been affected by all the changes with the other OS. I think I like Grub :). I haven't personally purchased any M$ware tho.

I've been pegged as "geekier than the rest of the geeks" in my department, so anytime anything new comes in, I'm the one who gets asked to play with it so there's always a fair amount of install/uninstall activity going on in my cube.