I really like Superman. More specifically, I really like the 'Christopher Reeve' Superman movies. I think he's the definitive Man of Steel, and I think that Gene Hackman is the definitive Lex Luthor. However... why does no-one realise that Clark Kent is Superman with glasses, and Superman is Clark Kent without glasses? Glasses on their own are no kind of a disguise, no matter how clumsily you act!
What makes it even worse is that he works for a newspaper, surrounded by people who by their very nature are inquisitive and observant. Lois Lane even goes flying with Superman and snogs him, works closely with Clark - yet it's only half way through the second movie (presumably months/years after they knew each other) before she even begins to suspect that something funny may be going on.
Lois Lane is supposed to be savvy , streetwise and observant. Very little get's by her. How could she have not been been able to very quickly connect the dots on the whole secret identity schtick of Clark Kent. It makes no sense whatsoever.