Yes, I would go see it specifically for Jessica Alba. However, I've heard on one of those entertainment shows that the movie is a frame by frame retellingof the comic book, which I think will hurt ticket sales. If you had read an entire series in one form, would you pay to see it again? That, and the fact that it will be in black and white (mostly) will hurt it, since people nowadays can't stand anything that doesn't have 100 colors splashed on the screen with kinetic editting so fast you can't tell if you've seen a man or a woman on screen. I blame MTV, I truly do.
But for me, I would go see it since
1. I like movies in B&W
2. I've never read the comic, but heard it was good, so it will be new to me
3. The aforementioned Jessica Alba