I've yet to see this movie...I wasn't greatly inspired by the first beyond the "razzle-dazzle" of seeing a Spiderman character in a film with computer effects rather than a stage set on it's side!

If it was on, I wouldn't avoid watching it. However scens like those you describe where there are oversights such as on-and-off powers begin to grate quite quickly.

The loss of his powers comes directly from an early Lee/Ditko Spider-man story...Spidey loses his powers for no reason (ends up hanging from a flagpole and having to inch his way to the building) before regaining his powers, again for no reason that is ever explained.  I liked this plot device for this very reason - that I remembered it from an early issue.  But then I loved this movie...

Edit:typo

Any specifics?

I have seen it when it arrived in Italy on autumn, 2004. I didn't like it as the first movie.

Sometimes, it seems a comedy. And I'm not talking about Spidey's jokes, but about certain scenes... They seem ridicoulous. Do you remember aunt May saving Spidey with her umbrella? Sigh. And what about all these women crying? It seems that anywhere in NY women are able only to cry!
There are good moments, too, but when I was looking at the screen I often believed to see a trash movie.

Joe S. Walker wrote: Annual #1 with the Sinister Six. In the story, Peter's powers disappear when he's feeling remorseful about Uncle Ben and then come back instinctively when he's attacked by Electro, so the implication is that he never really loses them, just the self-confidence to use them.

A similar event happened in ASM #200, too. In the previous issue Mysterio uses a drugged tiny arrow to kill Spider-Man, but he doesn't die. The drug has removed his powers from him, but actually it's only a psichological trick: during the story Spidey does whatever a spider can (heh), except wall crawling, because he really believes to be powerless.

I had similar issues with the power-loss storyline (I would have preferred that Peter give up being Spider-Man by choice, and not by circumstance). Also, the scene with Aunt May in peril was a little hard to take in a movie, because it seemed to me that she would have been easily killed being jerked around like that. On a comic page, the physics would not have been so obvious.

On JB's other problems, I tend to disagree. I thought the pacing and tone of SPIDER-MAN 2 were excellent when I first saw it in theatres, and I'm still a big fan of the movie after 3 screenings on DVD. I liked Jonah, I liked the examination of Peter's genius, I thought the "talking tentacles" worked cinematically, and I wasn't distracted by any wonky effects (to which I'm generally quite sensitive). To each their own, I guess!