I'm really into Neal Asher at the moment.

For a long haul series I'd say his Ian Cormac novels skipping shadow of the scorpion. Prador moon would be a epic space battle fest that ends with firing a moon through their version of a Stargate at near light speed.

And for more action packed I'd take his Dark Intelligence, War Factory and Infinity Engine trio. Penny Royal and Servel where two great characters.

Also Sea of Rust might be fun for a post apocalypse robot themed show.

But if you had a long LONG show or LOTR directors cut length movie. Either Hamiltons Pandora Star / Reality Dysfunction or The Sun Eater series by Christopher Ruocchio.