Well, off the top of my head, teams that will almost surely make the playoffs are the Thunder, Mavericks, Lakers, Grizzlies, Spurs, and the Blazers. Teams that I would say are more likely than the Rockets would be the Nuggets, depending upon how they handle the players that went to China and whether they keep Nene, and the Clippers if they somehow manage not to screw it up. Who knows, maybe even the Warriors surprise some people, but I don't know how good of a coach Jackson is.
I could see Houston making the playoffs, but it more likely than not depends on Denver's personnel moves and handling the China exodus and whether the Clippers can pull it together this year or if they're another year away.