Niven and Pournelle used an Orion drive as a key plot element in Footfall. Great hard SF novel.
http://en.wikipedia.org/wiki/Footfall
http://www.amazon.com/Footfall-Larry-Niven/dp/0345323440
May have to check this out. Getting remote from wife now to set DVR; I don’t do much TV.
Footfall bump.
I thought I was the only one here who read that kind of drivel! pretty amusing book.
Remember, it’s the SECOND one that really counts!
Just the other day on Twitter Homer Hickam said that the best SciFi is that that comes with real science. (And then he pointed me to his latest book LOL)
He wants to turn NASA into a subversive agency that leads the revolution against earth.