1. Yes Men
2. T.A.H.I.T.I.
3. The Bridge
4. The Hub
5. 0-8-4
Yes Men has thus far been my favorite, they knocked that one out of the park, over a few blocks and the county line too (in my opinion).
T.A.H.I.T.I. was awesome for the Bill Paxton. Really liked his character. And the big reveal with the Alien in the tank.
I enjoyed the bridge because of the implications it had with Mike Peterson, and what I feel will eventually lead to being a link to Winter Soldier.
I liked The Hub, because we started getting a wider glimpse of S.H.I.E.L.D. as an organization. For the years that I watched the various incarnations of Star Trek, I enjoyed episodes that showed a wider view of Starfleet. Meetings with Admirals, visits to Starfleet Command, Court Martials, etc. Same thing applies here. It gives the world of the MCU some depth and character to see the inner workings of an organization like S.H.I.E.L.D. rather than just a handful of Agents and a Helicarrier as we've seen in the MCU thus far.
Finally, 0-8-4, almost entirely because of Nick Fury. What a great cameo, a fantastically delivered butt-chewing and a good tie in to the movie side of the MCU. The cameo gives me hope that at some point, maybe we'll see some other supporting cast cameos. People like War Machine/Iron Patriot, or Pepper Potts, maybe Justin Hammer or Samuel Sterns, perhaps Falcon or Hawkeye or Black Widow. Maybe even Selvig or Jane Foster. The possibilities are endless, without even touching "The Big 4" directly, and in a similar way that Son of Coul has brought Sif into his "secret circle" some of these others might be brought in too.