http://www.youtube.com/watch?v=_N70KHIt1Us&feature=player_detailpage
Takeda Pharmaceutical Co., the manufacturer of the type 2 diabetic drug, Actos, must let a jury hear claims that it intentionally destroyed files related its Actos diabetes drug. The federal judge overseeing the trial has made this ruling, to allow this evidence and jury instruction, know as a Spoliation of Evidence. The jury is allowed to infer that the destroyed documents were damaging to the company.
http://www.youtube.com/watch?feature=player_detailpage&v=WqinXWoRLT0