Things we learned:
1. Island is probably not somebody's dream. (and I think Cutter's comments about nods to the fans are right on. Hurley is usually the vehicle for these comments).

2. Libby was in the hospital with Hurley.

3. The reason Hurley was in the hospital.

4. Inputing the numbers really doesn't do anything. (Unless Henry is lying).

5. Henry is an Other. (we learned this last ep, but had it confirmed in this one)

6. Zeke is not the leader of the others. There's another guy who makes Zeke look like Strawberry Shortcake, apparently.

7. The outside world (and, God, I guess) doesn't know the island exists.

Other comments:

I wonder if Henry's comments to Locke about God not even knowing about the island was done on purpose to mess with Locke's head.

Good to see Eko again! I liked it how, in this episode, a lot of folks were involved. We got to see Sayid, Anna-Lucia, Kate, Sawyer, Hurley, Libby, Eko, Charlie, Locke, Jin, Sun, and Jack.

The Hurley-Sawyer fight was hysterical. Sawyer getting pulled back into the tent. Hurley shouting out all of Sawyer's little pet names ("Jabba", "Stay-Puft") as he pounds him. Nice.

And it had cool guest stars -- Dave was Charlotte's husband from "Sex and the City" and the doctor was the senator from the "X-Men" movies.