Everyone is entitled to their opinions, but I disagree strongly with the negative criticism. I guess it depends what you're looking for in a book. For me, the Farseer trilogy has pretty much everything I'm looking for (To be fair, Hobb is always rather low on the action, but IMO she more than makes up for it with her superb characterization and prose). I'm re-reading the series right now, and loving every page.
To cgw, you want a comparison of Farseer with Hobb's other series? Here you go:
1. The Farseer trilogy - written in 1st person POV, about the early life of FitzChivalry Farseer. Very emotional, some would say depressing at times.
2. The Liveship Traders trilogy - written in very different style, 3rd person, from multiple POVs of several different characters. Takes place far to the south of the Six Duchies, but still the same world as Farseer. A good series, but most people seem to think it has a very slow start, and could definitely be a bit shorter. In my opinion, each book had a little too much material that might be called "filler". However, the series includes such cool things as ships, sea voyages, pirates, sea monsters, and dragons. And it ties in very nicely with both of the Fitz trilogies (although it's not 100% essential reading).
3. The Tawny Man trilogy - Once more it's the story of Fitz, taken up 15 years later. Essentially the same style as Farseer.
4. The Soldier Son trilogy - The newest work. Written in a similar style as the Fitz books, it's 1st person from the POV of the main character Nevare. There are many parallels with Farseer (Nevare doesn't exactly have an easy life). However, the setting is very different, much more like America in the early colonial times (with some magic thrown in).