This is one of the greatest shows on TV at current. Season one took an original concept and created an all time great that had tension to the extreme. There are some people who are of the opinion the subsequent seasons were pointless and are rehashing the same idea, and maybe that's true that the idea is being down over and over again, but I don't care, because the writing continues to be great, the twists are still unpredictable, there is continuing character development and you simply can't stop watching. Kiefer Sutherland has given us a great character with grit, edge, and emotions, and as such is one of few Heroes that I side with in fiction. That said, there are numerous great villains also, many of whom are every bit a match for Sutherland's Jack Bauer. Great writing, precise directing, beautiful cinematography,powerful performances from the actors, everything great television should be.