Other mistake: During the explosion from the tape recorder, there is a very short explosion shot recycled from a previous season (when Christopher locks Jack in a bunker and tries to kill him with a bomb placed in a clipboard). This old footage is also seen when that tape recorder explosion is shown on recaps of the event in season 6.
brassmaster
15th Jan 2012
24 (2001)
17th Jun 2011
The Big Bang Theory (2007)
The Herb Garden Germination - S4-E20
Other mistake: When Sheldon and Leonard are playing Archery on Wii Sports Resort, Sheldon presses the Z button on the nunchuck controller to fire the arrow, which is incorrect. When Leonard plays, he holds the Z button as he prepares to fire, then releases the Z button to fire, which is the correct controls. (00:03:00)