Thanks to Antiques Roadshow, the highest rated, long running prime-time series on PBS, with millions of viewers a week, we are a nation seeking fortune in our attics. And thanks to Antiques Roadshow Primer, with 572,000 copies in print, we are highly antiques-literate. But there's another audience out there, too, showing up ever more frequently on Antiques Roadshow--those obsessive, bitten-by-the-bug collectors. Bring on the "Maltese Falcon" posters!...