Prison Break is a show that I missed when it originally started. I remember thinking it looked cool but it was on at the same time as another show (I want to say Smallville but could be mistaken) that already had my VCR recorder taken up. Yay for DVRs and later Digital Purchases so that's not an issue anymore.
My wife ended up buying the first season on DVD for me and I pretty much fell in love with it instantly. I loved all the different characters from the leads in Michael Scofield and Lincoln Burrows to the supporting cast like T-Bag (my personal favorite character) Sucre, Bellick, Mahone and more. The concept and execution of the show sold me. To this day, Prison Break remains my favorite drama that isn't a comic books how.
I have seen the entire series numerous times at this point, and I do believe that Season 1 and 2 are definitely the best, though the others are still enjoyable. Season 3 was a short season that took place during a Writers' Strike and I think that did hurt it overall. Season 4 was back to a full season, and at that point became less about breaking out of something and more about breaking in to something. It worked for me and I thought it was a fitting end to the series. Then the direct to DVD The Final Break came out, filling in some info on how Scofield actually died. The series finale had a time jump where we are lead to believe Scofield died of a hereditary condition they had teased us with most the season. Turns out, even The Final Break revealed that wasn't the case.
After Prison Break ended, there was a little known show called Breakout Kings from some of the same producers, and even took place in the same world. In fact, T-Bag made an appearance in one of the earlier episodes. I was pumped for this extra story with him and enjoyed Breakout Kings despite the fact it didn't last long. Seeing a commerical that showed T-Bag was appearing is what made me try the show out to begin with.
Then Prison Break alumni started showing up on the DCCW shows, something I am very passionate about which was exciting for me. The icing on the cake was Scofield and Burrrows actors, Wentworth Miller and Dominic Purcell respectively, appearing as partners in crime Captain Cold and Heatwave on The Flash. They would go on to appear in DC's Legends of Tomorrow much to my delight.
I don't know the specifics but my understanding is that those two working together again started the domino effect that lead to Prison Break, Season 5. Frankly it doesn't matter. I'm just excited it's coming back.