I was re-playing The Walking Dead since I've been able to play the Steam version of the game since the update even though my computer is
way below the requirements, and I noticed a few more references in my replay.
First of all, I love the flyers behind Doug in the pharmacy in episode 1.

There's one that says "Easter Egg Hunt" and one that says "The I.T. Guy". The former references the in-game Doug (and his shirt) and the latter references the real world Doug.
Then there's the movie references in the achievements: Adventures in Babysitting and Guess Who's Coming to Dinner. And of course the Frank Sinatra reference, Goodbye, She Quietly Says.
And given all these references in the achievements, could Hit the Road be a reference to Sam & Max?