As mentioned by "Chip", Abby's publication in the Journal of Forensic Science is called "Deducting drop size and velocity from circular blood stains". There is an actual Journal of Forensic Sciences, and in January of 2005, the same year that this episode is released, the journal published a paper titled "Deducing drop size and impact velocity from circular bloodstains". The authors of this paper were L. Hule-Smith, N.Z. Mehdinazeh, and S. Chandra.
Michael Bellisario is the son of Donald P. Bellisario, the shows creator and producer and stepbrother Sean Murray (Timothy McGee).
Michael Bellisario has also played Midshipman Third Class Michael "Mikey" Roberts brother to Captain Bud J. Roberts Jr., played by Patrick Labyorteaux, on the show JAG (1995) (also created by Donald P. Bellisario). Capt. Roberts guest starred on NCIS (2003).
The opening scene with the web cam murder, the music used is also used in Grand Theft Auto IV lapdance.