This is one of  the best TV series I've ever seen. It was released right after 9/11 and features an anti-terrorism unit. This show has been called the most right wing one, the main character is willing to break rules in order to kill the bad guys, they also dared to feature torture even if many saw it controversial. The main character is also extremely skilled with weapon use and never fails to impress us. Each season has 24 episodes with 1 hour of real life events each and each season a new terrorist threat. The technology they use in the first few season is quite nostalgic to see as it was made 22 years ago. There is however some diversity in this on the American side and a black presidential candidate at some point. Still, it's worth giving it a try!