I am surprised that most people haven't liked the episode (if you check out show's FB page, for example, you can attest to it). Humorous stings against contemporary theoretical physics are spot on, and so are nerdy jokes - they made hilarious references to Star Trek, Star Wars and Lost. I especially enjoyed the subplot jokes about Romulan ale. THIS is what TBBT is all about, not "exploring commitment issues in long term relationships" or something. The episode is a pure 10, among the best the show has ever had.