The title Less than Hero can be a reference to the 1987 movie Less than Zero.
After Leela gets of the video phone with her parent, Hermes ask if she can pick him up "a license to kill". A License to kill is the 16th James Bond movie, and the double zeroes in 007 stands for "Agent with a license to kill".
Bender says "You are going down. Or Down Under" to a kangeroo, because it comes from Australia or Down Under.
πKea (Pi-KEA) is a parody of the furniture store IKEA.
The prorfessor wants Fry, Leela and Bender to take his new item back and exchange it for a wobbly cd rack and some meatballs. IKEA is from Sweden which is known for their meatballs.