Viewer favorite "Antiques Roadshow" on PBS is about to start its 20th season. There'll be a new set and new features, but the show isn't waiting to celebrate. They've come up with a list of 20 favorite "appraisals moments," where people who've schlepped in with supposed priceless artifacts find out if they've been right or wrong to let them collect dust in their homes for years.

There are some great reveals among them — but nothing can hold a candle to these two guys whose mothers played a big role in making them "Antiques Roadshow" stars. In this one, a guy whose mom spent $24 at an auction to buy him a box of comics books years ago finds out that two of them — No.'s 1 and 2 in the "Avengers" series from 1963 — are now worth as much as $6,550. He's all grown up now, but his reaction, which you can watch here starting around the 2:40 mark is pricelessly little kid-like: "My mom is going to freak out!"

It’s good. But not quite as good as this one, featuring an irrepressible man who met Andy Warhol in the 1980s and got the famed pop artist to autograph his collection of actual Campbells soup cans, along with other items. After releating how he took his mother and sister along with him on a visit to Warhol’s studio (but not whether those signed cans of chili beef and tomato rice soup are still edible after all these years, yuck!) he finds out his collection could be worth upwards of $36,000.

The Antiques Roadshow folks call what happens next, starting around the 2:15 mark, "the best guest reaction … ever." And we can't argue with them, mostly because of his interaction with his mother, who's apparently standing just out of camera range.

And thanks to him, we have a favorite new celebratory catch phrase now:

“Mom did you hear that? We’re going to Acapulco for the weekend!”

You can catch season 20 of “Antiques Roadshow” starting on Jan. 4th.