Season 4 of THE BIG BANG THEORY kicks off with The Robotic Manipulation, wherein Sheldon decides to procreate, Penny's outed as a floozy, and Howard gets manipulated by a robot in the best - and worst - of ways.
As far as episodes of The Big Bang Theory go, this wasn't one of the strongest. While all characters were still amusing, Leonard and Raj felt very extraneous to the plot for most of the episode.
Sheldon has spent the last four months in digital contact with Amy Farrah Fowler, his date from the season 3 finale, and he's decided two things: Amy is not his girlfriend, but she may be the future mother of his child. Penny convinces him to take Amy on a real date in an attempt to dissuade him, but it backfires when they spent most of the date estimating the amount of sexual partners Penny has had. Penny finally breaks out the big guns: what would Sheldon's conservative, religious mother think of her son having an IVF baby out of wedlock.
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