When Pete and Myka are talking to the toy robot collector who is using dating web sites, Pete remarks that he "can't believe that Commander Data here hasn't found his soulmate". Brent Spiner, who played Commander Data in the Star Trek franchise, has a recurring guest role in Warehouse 13 (including in this episode) as Brother Adrian.
The episode title harks back to the pilot, when Mrs. Frederic informed Pete of his "invitation to endless wonder", and the first episode of season three, where Steve is informed of "a world of endless wonder".
When Artie says "I'm sorry, thank you," Jinks responds by saying "the Mayans were right," to jokingly imply that it's such an unusual thing for Artie to say, that the world must be coming to an end. This episode first aired in 2012, in which a Long Count (about 394 years) of the Mayan calendar ended. There were people who thought this would result in the end of the world.
Danielle Nicolet has played a curious but dangerous character before.
Danielle Nicolet played Debra Staley whose curiosity about Pete & Myka then Warehouse 13 threatened the continued existence of Warehouse 13.
In 2002, Danielle Nicolet played Reese, an android on Stargate SG-1. Her curiosity for a character (i.e., Daniel) almost led to the destruction of SG-1.
Danielle Nicolet played Debra Staley whose curiosity about Pete & Myka then Warehouse 13 threatened the continued existence of Warehouse 13.
In 2002, Danielle Nicolet played Reese, an android on Stargate SG-1. Her curiosity for a character (i.e., Daniel) almost led to the destruction of SG-1.