An old flick from 1983 starring Judd Hirsch and Kate Nelligan called "Without A Trace"; about a boy in NYC who is abducted. There are no clues, or solid leads. The entire film is about the hell his family (especially his mother) goes through, and the detective (Hirsch) assigned to his case. Over a year elapses, and everyone tells her she needs to move on. Hirsch won't give up, and he starts painstakingly tracking down every dead end lead. There is an old woman in Jersey who has a history of calling in all kinds of crazy calls to the police; aliens, Elvis, bigfoot....you name it. She phoned in a tip that the boy was living next door. Because of her history, no one believed her. One day, Hirsch and his young son get in the car, and he drives to Jersey, and sure enough...next door to the old womans house, the kid had been living with his abductor. A guy had abducted him to stay with his house bound mother while he went to work. Back-up arrives, the place is surrounded, and they liberate the little boy. He rides in the car with Hirsch and his kid back to NYC. In every burrough they pass through all the way to his mothers house, a new cop car joins the convey with lights, and sirens on until they drive up her street with about 50 cars in tow. During that 5 minute driving sequence back to the little boys home and his unsuspecting mothers arms...I bawl like a little baby. That movie used to be on HBO ALLL THE TIME, and I've seen it probably a dozen times, and I weep every time.
Also, my favorite film EVER is "It's A Wonderful Life". I have been gifted more than a dozen copies of that film through the years. I own an original movie poster from the movie and have collected a bunch of other memorabillia from it's cast through the years. I have probably seen that movie AT LEAST 80 times. I know all of the dialogue, and even once had memorized the credits. EVERY time Jimmy Stewart says "....That's right. That's right...Atta boy Clarence." I cry my eyes out.