Originally Posted by corroonb
I see from looking at Wikipedia that a lot of Asimov's stuff has been extended by other authors. In my experience this has very rarely worked out and has sometimes produced terrible creations (the sequel of Day of the Triffids especially).
Anyway, is it worth reading any of the authorised sequels or are they just cash-ins?
Orson Scott Card wrote a couple interesting stories in the Foundation universe that I would recommend.
But if you're talking about the several novels that "finish" the Foundation series, I've never read them, nor will I ever read them.