It is a good thing that opening scenes are not always an indicator of how an episode will turn out. I consider it the television version of not judging a book by its cover. The cold opening with Sheldon and Amy at the book speech was a clever idea with them enjoying the author's dumbed-down take on science, but it simply did not translate to laughs for the viewer.
Fortunately, the rest of the episode did. Some great lines from Sheldon and Amy throughout the show, and a nice storyline involving the transmitting of gossip throughout the group.
Did not like Raj at all in this episode, but I think that character jumped the shark years ago when the writers decided to simply make him from Fez from That 70's Show. But tonight's episode was actually funny. A rare good season four episode of Bang tonight.