Jayna's cell phone has a picture of Gleek, the Wonder Twins' blue space monkey from Super Friends (1973) animated series, and their ringtone had the sound of Gleek laughing. Later, Chloe refers to the "Hall of Justice", another reference from the show.
When Lois tells Clark they should get to know each other better, Clark mentions that Lois tells Clark what color her underwear is every day. This is a reference to Superman: The Movie, when Lois asks Superman, "What color underwear am I wearing?" To test his X-ray vision.
Lois's ringtone for The Blur is the same song playing in the background of an early episode of Lois & Clark: The New Adventures of Superman, when Martha Kent makes Superman's costume.
The blur leaves his mark at the scene of a rescue by scorching it into something using his heat vision. Despite this, nobody seems to think that it is strange the the blur has stopped using this method and has resorted to using spray paint instead.
This is the only episode to feature Chloe's newly developed program that can impersonate the Blur's voice.