I absolutely love this show! I watch it with my parents all the time. Leonard, Sheldon, and Penny alone are a perfect trio; add in all of the other dorky and lovable characters and you have one of the best smart-comedy shows of all time. Sheldon has so many quirks: the way he knocks on the door, where he sits in the apartment, and "Bazinga!!" Though Penny is portrayed as the "dumb blonde" (yes I spell blonde like the English!) she's still able to keep up with the antics of her neighbors across the hall. My only concern is that with every episode the sexual innuendos and dry language have begun to oust all of the other parts of the show that I thought were truly funny. Consistent drinking amongst characters has become more prominent as well.