The Hairy T is a weird, weird place. They also have some strange sci-fi fear of cellular devices, so make sure you do not whip out a cell phone while you are in there. The only good thing going for them, on the RPG side anyway, is the fact that they commonly sell their WOTC stuff at a discounted rate.
I would recommend you check out the Silver Snail down on Queen Street, not only do they have a really great d&d section, but the place is full of really great stuff and is really clean and professional.