RORY: You’ll never get that [watching Boogie Nights] past Lorelai.
DEAN: Not a Marky Mark fan?
Dean assumes that Lorelai’s veto of Boogie Nights is because she dislikes Mark Wahlberg (born 1971). In the early 1990s, Mark Wahlberg was in a hip-hop group called Marky Mark and the Funky Bunch; their song Good Vibrations went to #1 in 1991. Wahlberg dropped the stage name Marky Mark after he began his acting career in 1993.