Asimov is fantastic; probably my favorite writer after Clarke. I'd recommend all his stuff, but especially the Robot and Foundation combined series. The books that impressed me the least were the Galactic Empire novels.
His writing style was deliberate. He felt that communicating complex ideas was best done by writing simply and clearly; not the only way to do it, certainly, but it worked for him.
I also second the recommendation of Psychohistorical Crisis. It's Big SF like, say, Vinge's "Marooned In Realtime," and very enjoyable. However, I definitely don't recommend the Second Foundation Trilogy by the Killer Bs. It was well written (of course), but not good Foundation. It was inconsistent with the original and-- well, I won't post spoilers, but let's just say it introduced an idea which was a great SF concept, but completely inappropriate for the Foundation Universe.
His writing style was deliberate. He felt that communicating complex ideas was best done by writing simply and clearly; not the only way to do it, certainly, but it worked for him.
I also second the recommendation of Psychohistorical Crisis. It's Big SF like, say, Vinge's "Marooned In Realtime," and very enjoyable. However, I definitely don't recommend the Second Foundation Trilogy by the Killer Bs. It was well written (of course), but not good Foundation. It was inconsistent with the original and-- well, I won't post spoilers, but let's just say it introduced an idea which was a great SF concept, but completely inappropriate for the Foundation Universe.
It's a shame that the novel didn't get authorized by the estate. But in a way, it's better for it as the author didn't really have any restraints and was able to go in a direction without stepping on any toes, like a vision of the world through someone else's eyes. The introduction of the familiar or fam was brilliant and very Asimov.