Christen Carter's pinback button collection includes buttons from George Washington's inauguration, rare buttons of Oswald the Lucky Rabbit, and Prohibition era buttons, but she may consider a trade for a rare Muhammad Ali button.

Candace Jordan's book collection includes a first-edition Winnie-the-Pooh book signed by both the author and illustrator, and a signed copy of the first and very limited edition "The Greatest Gift," the basis for "It's a Wonderful Life."

Jim Turano has attended over 193 Elton John concerts is building an unrivaled collection of memorabilia, including a costume jacket (with matching glasses) worn by Elton onstage; Lisa's bringing David Ashdown to appraise Jim's collection.

Karen collects Marilyn Monroe memorabilia for more than 30 years and amasses a collection of more than 2,000 items -- all proudly displayed in her museum-like "Marilyn Room."

Brian Smolik collects anything and everything with the Pac-Man design, including a Pac-Man bike and Pac-Man sleds; Tim Lapetino, a videogame historian who will appraise Brian's collection.

Rick Lisnek collects everything related to the Beatles; among his most prized items are the infamous censored "Butcher" album cover; a very rare tin of Beatles talcum powder; and a vintage Beatles record player.

Allen Stewart's Hall of Heroes superhero museum houses his collection of 65,000 comic books as well as a wide range of memorabilia, movie props and more; including a wooden Superman action figure and the comic that first cover-featured Wonder Woman.

Sheri Goldstrom builds a car museum to show off her family's collection of antique vehicles, which ranges from a 1918 dump truck to a 1956 Chevy; Chris Clyne tries to put a dollar amount on Sheri's collection and pull off a trade with a 1940 Ford.

Bryan Watkins doesn't just loved Lucy, he collects everything about her; some of his acquisitions include a bullfighter hat worn onscreen by Desi Arnaz; and a female "I Love Lucy" baby doll pulled from the shelves after she gave birth to a boy.

Michael Knight and Mel Gutherie's stunning collection of classic Hollywood cars and memorabilia has been featured at various Comic-Cons throughout the country; items in their collection range from the Batmobile to Scooby Doo's "Mystery Machine."

Rodney Shiflett is the ultimate Batman fan, with a collection of over 2,000 Dark Knight-related items displayed in his basement "Batcave"; his collection includes comic books, toys, and lithographs signed by the co-creator of Batman, Bob Kane.

Accountant and philanthropist Rick Heinz has been collecting sports memorabilia and art for over 40 years; some of his treasures include a jacket signed by nearly 200 NFL Hall of Famers and several baseballs autographed by former U.S. presidents.

It's all about bikes for enthusiast Rodney Griffis, owner of an extensive collection of antique bicycles; some of Rodney's prized possessions include a near-mint Schwinn Apple Krate Stingray and a 1947 Whizzer motorized bike.

Jim Hambrick's Superman collection began with a lunchbox he received at five years old. Sixty years later, he has the world's largest collection devoted to the Man of Steel — and a family-run museum in Metropolis, Illinois, to showcase it!

You have to go all the way to Australia to find a Snoopy collection this big! Lisa Ridey has 15,384 items related to the beloved Peanuts pooch and his pals!

You might say Patric Parkey & Harrell Gabehart are big fans of Dolly Parton. Their house is filled with every kind of Dolly Parton memorabilia imaginable including the bedroom furniture from her personal Dollywood suite.

Joel's astonishing hoard of jaw-dropping, one-of-a-kind Disneyland artifacts is worth more than $10 million!

With more than 6,000 items in her possession, Harry Potter fan Victoria Maclean holds the Guinness World Record for the largest collection of Wizarding World memorabilia.

Every day is Christmas in the world of Mark Klaus. He owns and operates Castle Noel, which is billed as "America's Largest Year Round Indoor Christmas Entertainment Attraction."

Patrick Brickley’s collections cover his home from floor to ceiling. The lifelong lover of film and television will share his favorite movie props and costumes, including memorable items from modern classics like "Seinfeld" (1989-1998), "Good Will Hunting" (1997), "Almost Famous" (2000) and "Fast Times at Ridgemont High" (1982). Movie props expert, Mark Short, joins host Lisa Whelchel to appraise Patrick’s vast collection and to entice Patrick to trade one of his beloved pieces for another screen-used item on his wish list.

A high school band teacher who has outfitted his basement with a life-sized reproduction of the Jupiter Two flight deck and a talking B9 robot from "Lost in Space," is visited by a fellow fan and builder of movie and television prop re-creations.

Jack Condon loves "Charlie's Angels" and has a Guinness World Record-holding collection; Kate appraises his treasures and tries to convince Condon to trade one of his items for two other pieces of memorabilia in a deal he can't resist.

Rob Klein joins Lisa Whelchel to appraise Vivian Eisenstadt's collection of over 2,000 Wonder Woman items and offers the superfan the chance to trade one of her favorite pieces for an item Rob considers the "holy grail" of Wonder Woman memorabilia.

Kenneth Ladd is the owner of a museum filled with magic memorabilia and a theatre where he performs as a magician; Kenneth's son Kevin helps collect and curate the magic memorabilia.

Mike Haviland is the man of Mayberry with his impressive collection of "The Andy Griffith Show" memorabilia; expert Rob Klein appraises Mike's favorite pieces and tells his own stories from his childhood spent living across from Andy Griffith.