1. Both wear suits a lot.
  2. Both known for their monologues.
  3. Both quintessential New York professionals.
  4. Both insist upon a traditional, very Midwestern code of behavior (at least publicly).
  5. Famously irritable with coworkers.
  6. Brilliant at their jobs - maybe the best in their fields, ever.
  7. A whoooooole lot of issues with women; inappropriate interactions with female subordinates; infidelity.
  8. Both ended up embracing meditation.
  9. Both dogged by weaselly characters (Jay Leno = Pete Campbell).
    Could actually go through a whole other list of doppelgängers: Johnny Carson = Roger Sterling; Merrill Markoe = Peggy Olson; Les Moonves = Bert Cooper; etc.
  10. Both of their shows ended this week.
  11. Both of their finales choked me up.
  12. Both of them were basically surrogate Dads for me, and I don't know what I'm going to do without them.