Tip since this basement sounds destined to SD jr's hangout, make a spot for a "kids" TV that is separate from the main tv. The fab SoJoCo McMansion I recently bought has a finished basement that is roughly L shaped. One leg of the L has a spot for a 32 inch tube about 18 inches off the floor that is perfect for the kids to watch cartoons on a Saturday morning while the other leg of the L has 65 inch Mits that I can watch Gameday on.
Since we don't have an artist rendering of the basement like we did in Kougs thread, I don't know if this specific layout works for you but keep the concept in mind.