The Kremps nephew Evan, who joins Erica's band, is meant to be Evan Dando, lead singer of The Lemonheads. At one point in the episode he is seen eating a box of lemonheads candy. The real life Evan cameos as the creepy old guy who stands outside the Wawa and buys kids beer ("5 for you, 1 for me").
The Lemonheads is an alternate rock band formed in Boston in 1986 by Evan Dando, Ben Deily, and Jesse Peretz. It has been active, except for a 1998-2004 hiatus, with Evan as the only original member throughout its existence.