Four seasons into Mad Men and there's yet to be a poor episode.
Ridiculously consistent high level of writing and absolutely fantastic TV.
If it keeps this up until the final episode then it'll sit comfortably in my top five series of all time.
Elite (C64)
World of Warcraft (PC) (these two are way ahead of the others)
GTA 3 (PS3)
Minecraft (PC/PS3/PS4)
Monkey Island (Amiga)
Kick Off 2 (Amiga)
Doom 2 (PC)
Ni No Kuni (PS3)
Skyrim (PS3 / PS4 / PC)
Dark Souls (PS3)