The episode title is a reference to the 2004 documentary Dig! (2004) featuring The Brian Jonestown Massacre, a band noted for its on-stage meltdowns. Joel Gion, a member of TBJM, guest stars.
Lorelai mentions that her parents tried to scare her away from having premarital intercourse by having a priest, a rabbi, and a Mormon missionary team up on her with a lecture. Mormon missionaries are forbidden to travel without their companion, so it should have been two Mormon missionaries.