I was planning not to do reviews until after i am done with school this semester, but after seeing All-Star Superman i just had to. Seriously, i found this to be one of the worst movies i have ever seen. At no point was i able to take this movie seriously, even though it is supposed to be about Superman confronting the possibility of death. There was so much plot induced stupidity in this one its ridiculous. For example, in a maximum security prison prisoners are allowed to build themselves robots. Also, a lot of the movie just felt silly to me, even though it is supposed to show what Superman dealing with the possibility of death.
When i checked the imdb page for this it got far more positive reviews than i expected, so maybe i missed something(Its possible that maybe you have to be a fan of the specific comics the movie is based on), but i personally found it worse than Superman Returns.