I've watched the FX adaptation and the original from 1980, and I have to say I like the original a bit more. Neither one of them cannot match the book, which I rank in the same level with Lord of the Rings: thick books you cannot stop reading. The television adaptations are passable, but a bit disappointing if you are a fan of the book.
The recent Shōgun series was surprisingly good, I really enjoyed it.
Clavell famously has no idea how to end a book - they pretty much _all_ have a deus ex machina in the form of a natural disaster - but they are excellent & fun reads of the days & weeks leading up to it.