
In the final puzzle, Marty and Doc communicate through wireless Xbox 360 headsets (although, strangely, the game wasn't ported to the Xbox 360)
Game:
Back To The Future

There's a bottle of banang (from Sam & Max Season 2) in the confiscated goods intake bin in Citizen Brown
Game:
Back To The Future

In Citizen Brown, if you tell Biff to do the chicken dance, he'll do Guybrush's dance from Tales of Monkey Island
Game:
Back To The Future

The famous line from Indiana Jones and the Last Crusade: The Adventure Game returns
Game:
Back To The Future

Law Offices of Gale, Zemeckis, and Fine: Bob Gale and Robert Zemeckis directed the Back to the Future films
Game:
Back To The Future