Joe Shuster was. The visual half of the pair who came up with Superman. And here's a video and brief synopsis of how Superman embodies Canadian values.
On a completely unrelated note...pages you can print and color.
There are a number of fansites out there. People just love some aspect or incarnation of Superman. This one is all about the George Reeves television show...and other stuff.
I read somewhere that somebody was doing a book about blogs that are only one post long. It's a potentially interesting topic. This guy got only seven posts along as of about a year ago, but the essence of the blog, to examine history through comics, was a good one. His first post was about Superman, and he had in it this picture:
I include it here because of the S shield. In my research, I came across a minister extolling the virtues of Superman because, so the argument goes, Superman can bring us closer to the glory of Christ. Part of the proof was the triangular S-shield, which he of course linked to the trinity. I'm not sure when the shield became the more familiar five-sided figure it is today, but it raises lots of questions about where we're supposed to look for meaning. Does anybody look at this and think it's a triangle?