Trivia / The Big Bang Theory S 4 E 7 The Apology Insufficiency

• Written-In Infirmity: This was the first episode to feature Kaley Cuoco after a horse riding accident left her leg broken. To hide the cast on her leg, Penny appears in only two scenes; in the first, she's behind the bar at the Cheesecake Factory; in the second, her leg is hidden behind a table.