What, no love for Reign of Steel?
I'd also recommend GURPS: Reign of Steel. It's a very nice post-apocalyptic setting where robots have taken over the world, and the remnants of humanity are struggling against them. Technomancer is cool as well. Something else that I've been considering is a biopunk campaign - like cyberpunk, but people have been genetically modified instead of getting cyber. GURPS Biotech would be the sourcebook for such a thing.
I'd start with the Lite rules, then, if you like those, pick up the core book and go with that. GURPS can require quite a large investment, but you can get by with just that one book if you want. Comp1 is a large compilation of skills, advantages, and disadvantages from years of supplements. Useful stuff, but if you've got a good eye for balance, you should be able to figure out point costs for most things without it.
(Incidentally, while Ken Hite be the man, Dave Pulver isn't too far behind him. Reign of Steel rocks on toast, as do all the other tech books he did.)