This is all great advice guys, and I greatly appreciate it. After further reading, I noticed that the acting skill explicitly covers intimidation on page 143: "Acting has no subskills. though it can cover a range of specialties ... intimidation (using body language and strength of will to cow a subject with implied threats and bluffs) ..."
The more I read this game, the more I like it. You created a smaller list of skills than DnD or GURPS, but each skill does more than a skill in those other systems. Thus, keeping the player from being overloaded with choices.