Getting back to the reviews, I'm a weird dude when it comes to the genre flicks (meaning not Oscar stuff like Terms of Endearment).
It really takes a-lot for me to hate a Superhero movie.
My definition of "liked it or loved it" comes down to if I feel the movie is worth owning which translates to repeat viewings.
I don't own nor will ever own Superman III and IV, Batman Forever, Batman and Robin, Catwoman or Elektra.
But when in the mood I enjoy revisiting Daredevil DC, AL Hulk, Blade 3, Ghost Rider, Punisher 1, Punisher WZ and FF4 1 and 2, so I own them which translates to liking them.
GL will either fall into that category or it just may turn out to be one of the greats like BB, TDK, IM, Thor etc, i'll know tomorrow at midnight.
But for me personally, I doubt it will fall into Superman IV territory