LOVE this show. I think the best episodes were the last few of this past season. They really caught me off guard. And I loved how they played with lighting and colors. They really projected the mood of each of those episodes.
My other two favorites are "House's Head" and "Wilson's Heart".
Side Note: The first time I saw Hugh Laurie in an interview, I was completely thrown off by his accent and how proper he appears to be.
Oh, and I just realized last week while watching re-runs of Friends that he's in one of the episodes. When Rachel is flying to London for Ross's wedding, he's sitting next to her on the plane. But instead of being rude without the accent, or nice with the accent, he has the accent but he's rude. Amazing