It is quite entertaining. The group I'm with has been playing in it since last November or so, and we've all had a grand time. 'Course, we've had quite a few PC deaths, but that's to be expected...
('course, if the most powerful character in our group wasn't a CE Sorcerer, then there might have been less deaths of Good characters..... )
Officially it's in Greyhawk, but the adventure is easily adapted for almost any setting. I'm doing one Temple in Greyhawk and another one in FR right now, actually.