This is astonishingly easy
  1. The Office
    there are numerous seasons and there is never going to be a time when the episode Michael steps on a George Foreman ceases to be funny so it's a good bet
  2. Law and Order: SVU
    Loads and loads of episodes, topical, Ice-T. Need I say more?
  3. The OC
    I was going to pick something from like, HBO, but honestly if I am stuck on a desert island I want to live vicariously through 28 year-old teenagers