While filming on location in Veracruz, Mexico, Mel Gibson learned that an elderly Mexican extra was suffering from cancer. Gibson got the man a visa by writing to the American ambassador, and then personally arranged for him to be flown to an alternative cancer therapist in Arizona.
After Driver (Gibson) is released from El Pueblito by Javi, in order to kill Frank, he is tailed by two hitmen on the way to San Diego. Hitman number one (Mark) is played by William Gibson, Mel's son. Hitman number two (Jesse) is played by Owen Dunne, Mel's nephew.
Payback (1999) is also a movie where the character, Porter, played by Gibson has only a one word name. In this movie, Gibson appears in the credits as Driver, and many, such as Harry Knowles of "Ain't it Cool News", have speculated that this movie may be the unauthorized sequel to Payback (1999).
According to the "Making of Get the Gringo" featurette, Mel Gibson had originally contacted Steve Jobs to play a part in the film. Steve showed initial enthusiasm, but eventually declined the offer, citing that he wasn't much of an actor. Gibson then resorted to the hilarious Clint Eastwood impression.
Has the title "How I Spent My Summer Vacation" in the UK.