This is the fifth episode of the fourth season of Breaking Bad. It is about on par with the last episode. It's great, but still not on the high level of excellence expected from this series(that's a 10/10 in my book). The episode has a good action sequence in the beginning, and the cliffhanger is brilliant as we get a drunken Walt saying things he is not supposed to.
In this episode, "Shotgun," Walt goes to Gus's restaurant to find out what happened to Jesse, but Gus is not there. Jesse is taken along for the ride by Mike all over New Mexico for pickups and Jesse rides shotgun, but something it not all it seems. Meanwhile, Skylar and Walt successfully buy the car wash.
Overall, this is a very good episode that features some more high-caliber dialogue and this episode shows that Jesse may have more of a purpose in episodes to come. In short, that last scene with Hank and the lab notes sets up the next episode nicely. I rate this episode 9/10.