Goofs:
Continuity: When Travis gets back into his cab after buying the Kris Kristofferson album, the beacon on the top reads "3S96", which is consistent with real New York taxis, which have their medallion number on their roof beacon. (Medallion numbers are always 4 digits, with the second being a letter.) In the next shot, the roof beacon reads "TAXI", which is never on a New York City taxi's roof beacon, but is often used in movies and TV shows. (more)

Trivia:
Paul Schrader was inspired to write the script after reading the published diary of Arthur Bremer, the man who was convicted of shooting presidential hopeful George Wallace. Eerily, Bremer was 26 years old in 1976 (the year the film was released), the same age as Travis Bickle in the film. (more)

Filming Locations:
13 St between 2nd & 3rd Avenues, Manhattan, New York City, New York, USA (more)

Quotes:
[first lines]
[phone rings loudly]
Personnel Officer: Harry, answer that.
Personnel Officer: So whaddya want to hack for, Bickle?
Travis Bickle: I can't sleep nights.
Personnel Officer: There's porno theaters for that.
Travis Bickle: Yeah, I know, I tried that.
Personnel Officer: So now what do you do?
Travis Bickle: I ride around most nights - subways, buses - but you know, if I'm gonna do that I might as well get paid for it.
(more)

Awards:
Nominated for 4 Oscars. Another 18 wins & 9 nominations (more)