I always thought during the time that Seinfeld was on the air that Patrick Warburton (Puddy) would have made a great Supes, and clearly Jerry, a big Superman fan, agrees, or he wouldn't have had him do the voice and stand in work for all those commercials.
He had that big physical presence but he also had a lovable lunk quality that made a lot of the more earnest Superheroes, Superman included, so appealing to their readership. I also think that if he had played the Tick more in this manner as opposed to the sort of crazed way he did that show might have been more successful.
I'm not saying they should have gotten him per se, especially since he's at least eight to ten years too old for the part now, but I do wish they would have tried to get someone with the same qualities. yes, it's generally agreed that the Reeve version of the character is great and iconic- but it was hardly the first incarnation of Superman to be so. I think it would have been more interesting to go back to basics than to try and carbon copy a version from 25 years ago, especially since Batman's been given a relatively fresh start (Black Suit notwithstanding) when it would have been easy for WB to use the Elfman theme, the Burton Batmobile and any number of recognizable accoutrements in an effort to appeal to the fans.
I mean, Routh looks and sounds sorta like Reeve, but out of respect for both the source material and Reeve's memory i'm not necessarily interested in seeing someone try and do the same thing he did.
All that said, I'm looking forward to this with cautious optimism because it really could go either way. Singer surprised me with the X-Men films, which made me care about characters I actively disliked as a kid, so I'm willing to see how he does with a character I've been a life-long fan of. Obviously there are already things about the project I dislike but it could be much, much worse, and it will probably be worth it just to see Spacey's take on Luthor.
I think as fans we spend so much time and energy anticipating a film that we forget that two hours and ten bucks isn't a huge investment to make in the grand scheme of things, and even as film lovers we should be mature enough to be able to deal with disappointment. And yes, that applies to you Star Wars nerds, too.