Bring "normal" people into a room where Formula 1, or an alternative motorsport is being broadcasted, and watch the glazed looks emerge. For most immediate effect, sportscar racing usually does the trick.
Television conceals the fury that is motorsport. It's a violent, powerful thing. Watching a race from trackside is a physical and emotional experience that simply cannot be captured on television. The sounds, the smells, the speed as perceived from a stationary position (as compared to a panning camera). It's akin to watching a space shuttle launch on CNN as opposed to somewhere near Cape Canaveral.
Whereas someone who doesn't care for football might go to a live game and leave with the very same perception, those who have no regard for motorsport often leave with an alternative viewpoint, and a newfound appreciation after seeing the event live.
Spa isn't interesting or emotive for everyone on TV, but if this Eau Rouge lookout has no effect, well, a pulse check may be in order.