Doc: You're quite welcome.
Clara leaves and we see that Doc has the most goofiest look on his face we've ever seen him with. Marty goes up to him.
Marty: It's a nice telescope.
That evening. It's the festival, and everyone in Hill Valley has arrived for it. Mayor Hubert stands in front of the clock that will eventually be in the Courthouse.
Mayor Hubert: Ladies and gentlemen! As mayor of Hill Valley, it gives me great pleasure to dedicate this clock to the people of Hill County. May it stand for all time! Tell me when, gentlemen!
Townspeople: 3...2...1...now!
The Mayor starts the clock and fireworks are released into the sky.
Mayor Hubert: Let the festivities begin!
Doc and Marty are at the festival too, a bit behind everyone else. Out of sight, they watch the dedication of the clock. Doc thinks back to their history with the clock.
Doc: Y'know Marty, in a way it's fitting that you and I are here to witness this.
Marty: Too bad I didn't bring my camera.
There is a flash of light, and we see the PHOTOGRAPHER taking pictures of people beside the clock. Marty and Doc look at each other. Cut to in front of the clock a few seconds later.
Photographer: Ready, gentlemen?
Doc: (to Marty) The only problem is we'll never be able to show it to anybody.
Marty: Smile, Doc.
The picture is taken. We cut to the dance. There is a band there, who have a surprising resemblance to ZZTop! :-)
Band Member: Yee Har!
Music: Doubleback (Instrumental Version) by ZZTop
As the music begins, Doc and Marty again step back into the background of the festival.
Doc: What great music!
Marty: Yeah, it's got a beat and you can dance to it!
In the background the COLT GUN SALESMAN can be seen.
Colt Gun Salesman: Step right up, gentlemen, and test your mettle with the latest products from Colonel Samuel Colt's patent firearms of Hartford, Connecticut. Take this model for example.
As Marty turns to watch the gun demonstration, Doc wonders off.
Colt Gun Salesman: (continued) The new, improved and refined Colt Peacemaker. Available to you tonight for the low, low price of $12.
Doc spots Clara and smiles at her. She walks over to him.
Doc: Good evening.
Clara: Evening.
Doc: You look very - nice.
Clara: Thank you.