I think I posted a while back that I found these on DVD for like, five bucks. I never got around to watching them until last night, and I have to say that I really like them. For a show filmed in 1941, the effects are surprisingly good. Granted, there are a few times that you can tell there's a dummy flying through the air, but it's not terribly distracting. The costume looks very good, and I liked Tom Tyler and Frank Coghlan Jr as Captain Marvel and Billy Batson, respectively. The origin was changed a bit - I always thought of Billy being a little bit younger, and a newsboy. In this version, he's around 16, maybe as old as 18 and he encounters the wizard Shazam on an archeological expedition. I think what really sold it for me though, is Tyler's acrobatics. He springs into the air and does flips in combat. It kind of looks like he used springboards similar to what George Reeves did on the Superman series. The serials were filmed when Fawcett still owned the character. If you haven't seen it, it's definitely worth a look.