From eBay comes their Hot List for April 2005. As they explain:

“The new and improved Hot Categories Report (a.k.a. “The Hot List”) is updated monthly and lists
level 4 (L4) categories where demand is growing faster than supply and where bid-to-item ratios
are relatively high.”

The following are from the Collectibles category, and are considered “Super Hot”:

Pinbacks, Nodders, Lunchboxes – Pinbacks – Wal-Mart
Animals – Insect, Butterfly – Beetle
Trading Cards – Action, Adventure – Alias
Disneyana – Contemporary (1968-Now) – Phones
Trading Cards – Sci-Fi, Fantasy – Stargate
Comics – Golden Age (1938-55) – Horror, Sci-Fi
Historical Memorabilia – Police – Holsters
Trading Cards – Sci-Fi, Fantasy – Harry Potter
Photographic Images – Antique (Pre-1940) – Magic Lantern Glass Slides
Comics – Bronze Age (1970-79) – War
Decorative Collectibles – Willitts – Take a Seat
Rocks, Fossils, Minerals – Shells – Conus
Comics – Figurines – X-Men
Animation Art, Characters – Animation Characters – Curious George
Tobacciana – Cigarette – Marlboro
Rocks, Fossils, Minerals – Mineral Specimens – Fluorescent Minerals
Casino – Casino Memorabilia – Matchbooks
Comics – Magazines – Collections
Comics – Original Comic Art – Comic Strip Art
Comics – Golden Age (1938-55) – Superhero
Autographs – Sci-Fi – Star Wars
Holiday, Seasonal – Christmas: Vintage (Pre-1946) – Reindeer Figures