I’ve seen every episode of Seinfeld, E.R., X-Files, Gilmore Girls, and a couple other shows 10+ times. Just watch ‘em on repeat lol. Ask me anything.
I've seen Seinfeld so many times that now a days I just tap on the "random" option in VLC when watching it. X-files I've divided to two, MonsterOfTheWeek and "moves plot forward". Then randomly pick from the two buckets.
Don't think there is any "new" series that I've watched over twice, I wonder why that is.