Unsanity has released FontCard 1.5, yours for under a tenner. The new version adds support for FontExplorer X and Suitcase Fusion sets, lets you view Cocoa's standard font panel in WYSIWYG, and adds third party sets just for good measure. Various bugs have been fixed too, though this version drops support for flavours of MacOS X 10.3. It's a free update for registered user, bless them.
Source: Fontzone