The answer, according to George ... dude, had real potential!
Besides starring in 3 'Naked Gun' movies -- which people really liked him in -- Simpson also had roles in some big projects like "Roots" and "The Towering Inferno."
But that was before he ... ya know ... killed two people.
As for Eddie, he's blowing up as an actor -- starring as the lead in "Chicago" on Broadway ... but telling TMZ Sports he's got big dreams to star in some huge TV shows one day. Check out the clip.