Favorite episode so far: Definitely 8.05. As much as I like the couples and their drama, TBBT is first and foremost a comedy, and from that light, they were seriously ON in 8.05 - absolute funniest episode so far this season.
funny. I nearly spewed my drink at more than one scene.
Favorite couples scene: For cutest, I'd give it to the Shamy French Fry share or just all the cute Shamy smiling in the premiere. For most awwww-inducing, I give it to the Leonard/Penny handholding moment.
Funniest scene: Sheldon's "tense" moment in 8.05. I seriously need to go back and write down everything he said and memorize it. He had me rolling on the floor.