I don't see much of that here, because these sorts of threads belong to >>/g/.
Other than that, I used to find Windows XP's retarded interface, which missed the point about most of everything (having a two-screen wizard for unzipping, that's just retarded), along with its garish colors completely obnoxious, and I wouldn't use it willingly. Not to speak about its "ISVs" who made shitty, inconsistent apps which required root privileges to even run, minimized to tray and all sorts of annoyances.
Thankfully, most of that seems to have gone away with Windows 7, which is quite a sensible OS. I'd have no complaints if I had to use it full time.