The seats from "The Vet" that Booth struggles to get up the elevator are from Philadelphia's Veterans Stadium. It was the home of both of the Phillies (baseball) and the Eagles (football). Like many of the multi-purpose stadia of its time, it used an artificial surface, which was regarded by everyone as the worst of any stadium in the U.S. It opened in 1971 and closed in 2003. It was demolished the following year.
On the season 6 DVDs, Emily Deschanel stated on the commentary that it was during the filming of this episode that she found out she was pregnant with her first child.
The penetrant test that Dr. Brennan asks Wendell to perform is the same test that Dr. Edison did in S3 E13 for Max Keenan's trial.
Wendell uses potatoes to generate electricity. Earlier in the season, Parker talks about how he lost the science fair because another student and his father used a potato to generate electricity.