The character Dr. Benlo is played by Samantha Noble, real-life daughter of John Noble who plays Dr. Walter Bishop.
The glyphs for this episode spell out: POWERS
The name of the episode comes from a quote from Shakespeare's "The Tempest". It is also the name of a novel by Aldous Huxley
This episode features the running joke where Walter can't quite correctly recall Astrid's name. Here he calls her "Athos" as in one of the three musketeers.