The above quote has very little to do with this post, but it does encapsulate how serious I am about Character Business. Not business in the sense of Neckties and Profit-Margins, but business in the theatrical sense, that is:The Monarch: " (sighing) Jollyrancher82, never get henchmen.''Jollyrancher82: "You know, that's not my real name.''The Monarch: "Well, how was I supposed to know? I used my real name.''Jollyrancher82: "I just thought, you know... "The Monarch," I thought you were into cosplay...''The Monarch: "Real name! And I am into costumed business, not costumed play."
9. An incidental action performed by an actor on the stage to fill a pause between lines or to provide interesting detail.Character Business is one of the things that can make or break a game for me. PCs with good character business can rescue a dreary plot and if done well can make a good game great.
14. (Performing Arts / Theatre) Also called stage business Theatre an incidental action, such as lighting a pipe, performed by an actor for dramatic effect (http://thefreedictionary.com/business)