Say what? - Tegestology

The habit of hoarding beer coasters (or beer mats, as they're called outside the US) is known as tegestology, which occupies its own tidy corner within the larger public house of Breweriana. Other collectors seek out the choicest bottle caps (Bert of Sesame Street being the most famous of these), and still others just cut to the chase and collect beer itself in all its heady glory.