Actually, Grondy, that would be R. Daneel Olivaw, with a fair amount of help from R. Giskard Reventlov. It's very disturbing that I remember that, as long as it's been, though I did have to Google for the latter. Daneel, however, is unforgetable (or so I thought.)
Now how did I know who posted the response to my last post BEFORE I scrolled up...?
Edit: I forgot, the Foundation et al. series is actually the only series Asimov ever wrote because, through the convenient agency of the robots, most notably Daneel, he manages to seamlessly weave every book he ever wrote into one series. And at least one short story. So The Caves of Steel and The Naked Sun are really, along with the other Robot novels/shorts just prequels to Foundation. I gather you're not familiar with Foundation, Caudimordax, and I highly recommend it since a) the very premise is fascinating (I still think future history is workable, though maybe not to the degree of precision acheived by Hari Seldon, but then even he ruled out precision) and b) again, Asimov, by his own admission, only wrote one series. Personally, I thought the last books, the wrap ups, felt like exactly that, and seemed a little force, but the original trilogy is an SF classic.