I just showed my 8 year old son the Gamera movies, he likes Gamera better than Godzilla. He was glued to the TV yesterday. It took me back to when I used to watch them when I was his age.
I've seen only a few of the Showa Gamera movies along with the original. They're pretty cool. However when it comes to Gamera my absolute favorites will always be the Heisei trilogy directed by Shusuke Kaneko.