I'm looking to build up my bits box in preparation for attempting a large Titan-esque Necron style robot. Does anyone know of any good plastic robot kits (or failing that action toys)? And where can I get my hands on any unwanted / bankrupt stock / slightly faulty plastic kits (pref. of a science fiction or military theme) to get the conversion going?

Doh... I think I dumped a whole load of what you might be looking for a couple of months back I'll check when I get home.