"London is burning and I live by the river" - Stephen HawkingStephen Hawking had one of the most unique and recognizable voices in the world. The thing is - it wasn't really unique. It was computer synthesized and thus fairly easy to replicate. Can you imagine the potential?
You could have Stephen Hawking's voice do cover songs. It wouldn't work for some songs like the Beatle's Helter Skelter or the Butthole Surfers' Pepper but how cool would it be to hear some Sinatra covers or the smooth baby-making songs of Teddy Pendergrass done by Stephen Hawking's voice.
You could also have Stephen Hawking's voice cover classic comedy bits. Like George Carlin's A Place for My Stuff. Admit it - you'd check that out just out of curiosity.