Blackout

Positive: the base scenario of someone hacking the power supply of Los Angelos. The plot is thrilling and also entertaining. And Anne Heche, I love Anne Heche.

Negative: Several lines of action in parallel, without being interlinked. The longer the movie goes on, the more irritating are the logical gaps, and at the end I felt annoyed.

If you are in a mood for an action story with many people being killed, then this might be the right thing. If you are looking for straight and logic entertainment, maybe not.