A defendant was recently convicted of killing a man in a hit and run accident. 
The investment banker had a history of several DUI’s and claimed he thought he had simply hit a deer and thus did not stop to render assistance. A police search of his computer revealed otherwise. Numerous Google searches done by the defendant over the course of the proceeding several days included “auto parts, out-of-state auto dealers and reporting requirements to law enforcement”. As if this was not enough for the prosecutor’s case, there was also a search for “hit and run” which the defendant then followed to a newspaper website containing information about the hit and run killing the defendant had committed.
Obviously this all negated defendant’s claim that he knew nothing of the hit and run incident until he was picked up by police. The presiding judge sentenced the banker to three years incarceration which was upheld on appeal.
Moral of the story? Use someone else’s computer when you are researching how to dispose of that body.
Thanks to Cnet for first reporting on the story.