Hey, at least it wasn't as bad as the Two and a Half Men finale. It has that to look forward to.
Mayim Bialik was revealed as Sheldon's possible girlfriend at the end of the episode. This is a key role for the show and I think it is good casting. She's been on Til Death and The Secret Life of the American Teenager as of late, but I do not expect this to be a long-running thing. Still, their first "date" should provide some laughs.
The problem with The Big Bang Theory right now, is really the same problem with the show for the past year plus: it's all Sheldon. Raj and Howard did not say a funny thing all night, and you all know my feelings on Leonard by now. They need a new member of the cast, but when the ratings are as high as they are right now shows tend to not shake things up, despite the effect it might have on the quality.