The Simpsons: Hit & Run Cheats

Set the date on the GameCube's internal clock to Thanksgiving. When you enter the game's menu screen (Homer snoozing on the couch), Homer will be wearing a pilgrim's hat and there will be a cornucopia on the lamp table.

Set the date on the GameCube's internal clock to New Year's Day (1/1). Various game changes will occur to reflect the holiday.

Set the date on the GameCube's internal clock to Halloween (10/31). When you enter the game's menu screen (Homer snoozing on the couch), it will be dark outside, and there will be Jackolanterns scattered across the room.

Set the date on the GameCube's internal clock to Christmas (12/25). When you enter the game's menu screen (Homer snoozing on the couch), Homer will be dressed in a Santa suit and there will be a Christmas tree in the corner of the room.