The only Star Wars novels I really like are the ones by Timothy Zahn. The Thrawn trilogy and the Hand of Thrawn set were awesome and I don't think any others will be as good as that.
The RotS novel was pretty good; Dark Lord, if that's the one where Vader tracks down and kills the leftover Jedi, was pretty cool too. Other than that I can't stand any prequel era stuff. The New Jedi Order was rubbish too, and the ones after where they killed Mara Jade and had Jacen turn evil, forget it.