The air-guitar song at the end is Joe Satriani's "Always with You, Always with Me" - track #4 from the "Surfing with the Alien" album released in 1987.
The song Steve and Snot air guitar to is 2112 Overture by Canadian rock band Rush. The apartment block in which Snot is housed as part of Stans plan is number 2112.
The title is a reference to the WAR song of the same name