J.J. Abrams' thriller series from the early 2000s ran for five seasons and 105 episodes, and it still holds up surprisingly well. The series still holds up, which is particularly impressive considering how much the spy genre can change over just a few years. The spy genre may be the most susceptible to aging of any genre. Compared To Many Spy Thrillers, Alias Has Aged Surprisingly WellJennifer Garner as Sydney Bristow tied to a chair in Alias Episode 4x2. The series also has everything it needs to stand out among a packed list of great spy shows.