Yeah ever since I saw that expose' on the cleaning of hotel rooms (I think the link was on this website? Not sure... Hidden cameras showed that they don't even clean glasses in the RITZ CARLTON!) I've been hand washing all glasses before using them. Pain in the rear, yes, but it grosses me out too much not to.
Now that I think about it, I may have had this emailed to me. I don't remember if it was posted on here, so here are a couple of links. Prepare to be grossed out!
LiveLeak.com - Housekeeping Practices at Hotels (Part 1)
Dirty Hotel Secrets Follow Up Video (Part 2)