Sneak peek: Meet Rick Lisnek

After seeing the Beatles on The Ed Sullivan Show, Rick Lisnek was never the same. He devoted a large part of his life to collecting everything related to the Fab Four, and now displays it all in his gallery-like basement

Sneak peek: Meet Jeff Bauspies

With more than 1,700 board games in his collection, Jeff Bauspies is the Guinness World Record holder for the largest collection of its kind. His custom-built basement is packed floor-to-ceiling with games arranged in alphabetical order, some of which are quite rare.

Sneak peek: Meet Brian Smolik

Brian Smolik is all about Pac-Man. As a fan of the game since the '80s, Brian began collecting anything and everything with the Pac-Man design, and these days his basement is packed to the gills with Pac-Man paraphernalia.

Sneak peek: Meet Karen

Karen has been collecting Marilyn Monroe memorabilia for over 30 years and has amassed a collection of more than 2,000 items — all proudly displayed in her museum-like "Marilyn Room." She shares with Lisa some of her most treasured pieces, including some of Marilyn Monroe's bodysuits, eyeliner and mascara.

Sneak peek: Meet Janet Esteves

As the Guinness World Record holder for the most Mickey Mouse memorabilia, you might say Janet Esteves is mad about Mickey! Her collection totals more than 14,000 items, which she started gathering in the 1960s and 1970s.

Sneak peek: Meet Chris Stulz