Disco Inferno - April 1, 1976 - S2-E2
Continuity mistake: Sam is buttoning up his shirt while at the bar. His hands are about halfway down his shirt. Cut and we see him from another angle. His hands are now down.
What Price Gloria? - October 16, 1961 - S2-E4
Continuity mistake: When Sam goes out of the window to save Gloria, part of the ledge breaks off, but in the near shots it is broken off almost to the corner near Gloria, while in the shots from below most of the ledge is still intact. (00:35:45)
Jimmy - October 14, 1964 - S2-E8
Continuity mistake: Near the end of the episode Michael Madsen's character attempts to run over Sam with a forklift, causing the boy to fall into the water and almost drown. As the boy is falling into the water, there is a wide shot of the action. In the scene, a box is being pushed over the edge into the harbor. In the close shot following, the box is gone, as are other items nearby.
Catch A Falling Star - May 21, 1979 - S2-E10
Continuity mistake: As Sam is preparing to go on stage as Don Quixote, after catching the lead actor, a quick cut to Dulcinea dancing is shown. It is supposed to be Sam's love interest and ex piano teacher Nicole as Dulcinea. However, you can see Nicole standing in the background, in the pink outfit she was wearing in scenes from the beginning of the episode. (00:41:55)
Catch A Falling Star - May 21, 1979 - S2-E10
Continuity mistake: The makeup lady puts a moustache on Sam right after he leaps into the man. A stagehand bursts in, telling him it is time to go on. The moustache is now gone, and the makeup lady puts it back on Sam's face.
Catch A Falling Star - May 21, 1979 - S2-E10
Continuity mistake: When Sam is going on stage near the beginning, another guy peels off his moustache and says "imposter." The problem is, the makeup lady already removed his moustache earlier in the episode.
A Portrait for Troian - February 7, 1971 - S2-E11
Continuity mistake: When she's confronting her brother on the dock, Troian's long hair shifts from being completely behind her back to falling over her shoulders in front with each change of camera angle. (00:35:00)
Another Mother - September 30, 1981 - S2-E13
Continuity mistake: When Sam uses martial arts against the men from the van, one of them pulls a knife as he kneels on his right knee in the close-up, but next shot he is kneeling on his left knee.
Another Mother - September 30, 1981 - S2-E13
Continuity mistake: When one of the sicko men from the van pulls a knife on Sam, the white blouse is either tucked into the skirt or hangs over it, depending on the shot.
All Americans - November 6, 1962 - S2-E14
Continuity mistake: When Sam and Ruben are fighting in the locker room they knock over a set of lockers (and only one set) and the door flies open on it. When they roll over the set of lockers the camera cuts and 2 sets of lockers are suddenly knocked down with all locker doors closed.
All Americans - November 6, 1962 - S2-E14
Continuity mistake: In the fight between Sam and Ruben in the locker room, Ruben has a white visor in his hands during the fight which magically disappears during the fight after a camera cut, and Ruben leaves after the coach breaks up the fight, without the visor.
All Americans - November 6, 1962 - S2-E14
Continuity mistake: Chewie is wearing the number 86 jersey in both games. However, when he is sitting out with his supposedly injured knee we see a shot of the number 86 jersey chasing an opponent.
All Americans - November 6, 1962 - S2-E14
Continuity mistake: In the party after the 1st game when Chewie and Sam are talking about the championship, Chewie pulls up a chair and sits on it backwards with his hands in his lap. After the cut to another camera, his arms are up on the back of the chair.
All Americans - November 6, 1962 - S2-E14
Continuity mistake: In one play during the montage sequence of the championship game, the quarterback for the Jaguars (Sam) is number 15 - but he wears 12 throughout the rest of the show. This is Sam, because Al later tells him to quit, so he's been playing the whole game.
Her Charm - September 26, 1973 - S2-E15
Continuity mistake: The FBI agent's car is riddled with bullets in the opening scene. A few shots later, the same car rounds a corner during the chase, and all the bullet holes have disappeared. (00:03:30)
Her Charm - September 26, 1973 - S2-E15
Continuity mistake: After throwing the laundry bags out the back of the truck, close up shots on Sam and the girl show the back of the truck being relatively empty. However, the next shot from the rear of the truck has the back full of laundry bags again.
Her Charm - September 26, 1973 - S2-E15
Continuity mistake: After the bad guys attack the laundry truck and the girl starts throwing bags out of the truck, one sees in the close up shot a bullet-ridden gray door, but in the wide angle shot it's a pristine brown door.
Her Charm - September 26, 1973 - S2-E15
Continuity mistake: The rearview mirror on Nick's car disappears and reappears repeatedly, when he pursues the laundry truck and later at the cabin.
Freedom - November 22, 1970 - S2-E16
Continuity mistake: Sam is talking to Al in the desert about what year it is. Al's cigar jumps in his mouth and back to his hand.
Good Night, Dear Heart - November 9, 1957 - S2-E17
Continuity mistake: At the end, when Sam is at the graveside, snow is falling and a close-up shot shows Sam covered in snow, but the wide angle shot shows little to no snow on him.
Chosen answer: Per the Quantum leap page at http://www.scifi.com/quantum/episodes/season5.html. 8 August 1953: An enigmatic leap lands Sam in a Pennsylvania tavern, as his own grown self on the day of his birth. As Al and Gushie work frantically to locate him, Sam befriends a wise bartender (popular character actor McGill, who'd appeared in a different role in the very first "leap") and a group of coal miners. As a host of familiar-looking faces pass through the bar - with different identities than Sam remembers - Sam ponders his life of leaping with Al the bartender, who tells Sam he controls his own destiny. Pressed for more, Al the bartender simply shrugs and says, "Sometimes, 'that's the way it is' is the best explanation." Sam realizes he must right at least one more wrong before he can go home, and leaps back to tell Al Calvavicci's wife Beth (from "M.I.A.") to wait for Al, who will survive Vietnam and come home to her. The closing title cards state that Beth and Al have four daughters and will shortly celebrate their 39th wedding anniversary ... and that Sam Beckett never returned home.
Boobra