(S02E23) Buzzinga! This episode, which is the season 2 finale, kind of blew my mind. Sheldon is almost a real boy! Not only was he able to correctly identify emotions not once, but twice, but he has started pulling honest-to-goodness pranks. Funny ones, at that! The whole bedtime conversation between he and Leonard about Penny wanting him carnally? You know that wouldn't have happened a year ago.

Speaking of Penny, there was one glaring thing about this otherwise enjoyable episode -- she was practically non-existent! Granted, she played a big role in the over-arching storyline if not the episodic one, but nonetheless, her absence was definitely noticeable.