This is the best show that I have ever watched! I got hooked at the beginning of Season 4 and never stopped watching! I borrowed the first three seasons from a friend. Best move that I have ever made. Season One was a terrorist plot to assassinate a presidential candidate. Season Two was primarily about a nuclear bomb in Los Angeles, and later turned out to ignite a war with the Middle East. Season Three was about a deadly virus to be unleashed into the general population. Season Four began as a train bombing and just as Jack thought that the terrorist plot was over, it was just getting started. Season Five is about a nerve gas attack and oil prices (a hot current event topic). Greatest show ever, mass people talk about it and forums allow political discussion and speculation on plot twists for next episode. www.fox.com/24/ is the site for forums and other stuff. Also many podcasts out on the topic of 24.