Yeah it's worth a look. It's not a real big place but what they do have is very interesting. When I was there they were in the process of restoring a B-29 IIRC, (probably done by now). They have a few WW2 birds, like the B17 and C47 but mostly Cold War aircraft. The SR71 Blackbird was pretty cool. Curtis LeMay's desk and a Atom bomb was also there, I thought that was pretty neat as well. Good literature in the gift shop.
If you do go, take a good camera. It's pretty dark in there in places and my cheap camera didn't take very good pictures.