I am still making it through the entire episode. Matt has an awesome way of teaching Lightroom. Backslash key – before and after! Man – how am I supposed to remember all of the keyboard shortcuts?
Here is the link to his podcast. http://kelbytv.com/lightroomkillertips/2012/04/04/lightroom-and-photoshop-beforeafter/
Episode Summary 
Ever since I first started using the new sliders in the Basic panel in Lightroom 4, I was hooked. So I started out to record a video on how I use them but realized I use them in different ways for different photos. Then I realized, there were more things I wanted to do to this photo. Before I knew it, I had a full before and after video using Photoshop and all. You gotta love it when your video starts taking over right? Anyway, my main goal here is to show you the Basic panel sliders in Lightroom 4 and just how powerful moving 4-5 sliders can be for your photo. In fact, you’ll see that most of the work is done before we ever leave Lightroom to Photoshop. I hope you enjoy!