My favourite show of all time. Became a fan when season 5 started and was hooked from then on. Caught up on all previous seasons over the next year and was all up to date by the time season 6 began. Great storytelling, characters and music. Excellent twists and the acting from Kiefer Sutherland has gotten better every season. It had a problem with repeating itself with plots at times and one or two writing issues, such as the Nuke explosion in season 6. They didn't do a proper fallout from that. but it didn't harm the show too much. It's very rewatchable and I went back and rewatched the whole thing (including Legacy) during the first Covid lockdown. It certainly helped pass the time. My best seasons are 5,9,4,3,8,1,7,2,6, Legacy in that order. Amazing yet underrated T.V program.