I've been catching TOS on MeTV for years and it's great. They have all the classics from the 60s: "Sea Hunt," "Batman," "The Monkees," "The Partridge Family," and "Lost in Space" (guility pleasure). "Voyage to the Bottom the Sea" is on late night and definately has gotten better with age. If you haven't seen it, catch it, you won't be disappointed!
I will say my mid-life crisis is going much better since Me hit the airwaves.