Sorry, requested but did not get around to reading.

Vincent Wu is one of three members of the Captain Stupendous Fan Club-- not the "official" one, but the one he and his friends Max and George think is most important. Because of Captain Stupendous, Copperplate City has been a relatively safe place, but Professor Mayhem is on the loose with a giant robot. Captain Stupendous doesn't seem to be on his game in working against this threat of evil, and Vincent soon finds out why-- the first Captain has been replaced by a girl from his school and the object of his affection, Polly. Polly doesn't want to be a superhero, but doesn't have a choice, especially when Vincent's mom, the district superintendent is taken hostage by the evil professor and the entire town is in jeopardy. Can the Fan Club help Polly polish her powers, defeat the professor, and come to terms with her new skills?
Strengths: I am glad this made the Cybils short list-- it was awesome. Everything that my students are looking for in a book, AND here is a video clip of Mike Jung playing the ukelele over at The Book Nut! I love it when books show very clear attempts to figure out what kids WANT TO READ!!! Super heroes are a huge thing now, and this had so much more. A great romance, strong female protagonist, faithful sidekicks, compelling use for Vincent's encyclopedic geek trivia. There are even characters who are incidentally of Asian descent and appear on the cover. Bonus! If this were not enough, the writing was excellent. Even with no explanation for the existence of Captain Stupendous, I was sucked right into the book, and marvelous turns of phrase abound. Isn't Mock Apple Pie a GREAT rock band name?
Weaknesses: Professor Mayhem's motivation seemed weak to me, not that it really mattered. I want to go learn to play the ukelele. Or the banjo, whichever students would find most annoying!