Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery, and Wolowitz and Bernadette can't believe what they are feeling after Stuart moves out.
Guest Cast
Cast Appearances
Kaley Cuoco
as Penny
Episode Discussion
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Is it just me, or did Sheldon hint about synesthesia?