11. No Political Correctness
Now that every person on earth has grown weary of the tiresome trend toward political correctness, it's nice to watch a movie at the other end of the spectrum.
No, we don't want to glorify Arthur's vices, we just want to be left alone and not be preached to. A politically-correct adjustment to Arthur's drunken childishness would fatally diminish his immaturity and eventual growth into adulthood. Arthur is a drinking-and-driving, womanizing, whoring spendthrift and is very happy about it.
12. Unforgettable Lines
Arthur is absolutely filled with memorable lines, many of which are still quoted today. "Are you a hooker? Jesus, I just thought I was doing great with you." "Good luck in prison." " I race cars, play tennis, and fondle women, BUT! I have weekends off, and I am my own boss. " "Don't you hate Perry's wife?" "Usually one must go to a bowling alley to meet a woman of your stature." "He's taking the knife out of the cheese. Do you think he wants some cheese?" Heck, there's even a mildly philosophical line uttered by Arthur during his engagement dinner with Susan - "Not everyone who drinks is a poet. Some of us drink because we're not poets."
If you don't know these lines, then you haven't seen the movie. Watch it now.