I *loved* this last episode of TBBT. I love those moments where Sheldon has to "simulate" being human.
I really enjoy Sheldon and Amy together as well, though I do miss the interaction of all four guys as well. It's been nice having another girl to balance out Penny.
I also love the ongoing nods to the whole Wallowitz/Raj fandom. It was really amusing in this ep where Raj was talking about bearing Wallowitz's children.