I was excited about 'Bristol 2000' nearly 5 years ago when i first heard about the scheme and have remained a firm fan since then. The three centres are proving more successful than anyones dreams. Explore, the science centre, is very impressive. It uses computers, hands on exhibits as well as guides to teach you about basic scientific principals as well as have a great day out. Be warned though, some of the more interactive exhibits (namely the simulator and the planetarium) cost more.
Wildwalk (previously called Wildscreen) is an impressive combination of state of the art video projection and nature teamed together to provide a very interesting exhibit which can keep those natrualy minded amused for hours.
The IMAX theatre is, in my opinion, the best exhibit. The films run fairly regularly and it is reasonably priced. Also, the biggest screen in the south west cant be bad. The sound quality is quite astonishing and the bugs crawling accros the lens of the projector all add to the effect.
All in all, a great day out