Most of the episode took place in the sideways world. We found out that Eloise, the mother of Daniel Farragut, is actually Charles Widmore's wife and Daniel is his son. Penny, Desmond's love, is Daniel's half-sister. Desmond, after landing from Australia on Flight 815 was assigned the task of taking Charlie (who had been arrested on the flight for his heroin possession) to do a concert for Mrs. Widmore and her loving son Daniel.
Then all kinds of love connections happened with Charlie (of all people) being the prophet. His drowning hand with "Not Penny's boat" reenacted as he forced Desmond to crash into water. Desmond began his search for true love ... for Penny. Apparently the message is that love is more important than anything else, I guess.
On the island, I was thrown into my own state of confusion by the befuddled Fiber One grocery clerk being in a position of intelligence and authority of some type. I kept expecting him to call his manager to tell them there are no nuts or twigs. Desmond was tested in a killing electromagnetic force and survived as only he could. Widmore has a mission for him. But then Sayid appeared at the end and Desmond went off with him. Oh, now I'm all Lost again! How about you?
My Watership Down theory may still be viable. There was a rabbit.