First post on the forum, hee hee.
Just now played a game where this came up and thought it was neat enough to let people know.
With Hermit and Squire in play, you can pretty much gain one expensive attack card of your choice every shuffle by trashing the Squire from your hand or from your discard pile, then gaining another Squire. Not exactly sure what the odds are of this happening, but they aren't bad. Best of all, when you're done gaining, you can turn the Hermit right into a Madman.
Of course, the combo is moot without strong attack cards or with a few strong $3s and $4s, but on those expensive boards where it feels like you're stuck at silver forever, it's a handy way to jumpstart an engine. Shame it only applies on specific boards.