Heh, I'm scared to death of heights, too...but not chairlifts or rollercoasters, interestingly enough. That glass lookout thingie over the Grand Canyon sounds like a sort of Hell to me, though.
YES, totally! Just imagining that makes me dizzy!
I don't mind rollercoasters, though sometimes I have to close my eyes or grip my neighbor tightly on the climb. Maybe the fear of heights adds to the rush, though.