First, make sure you're activating your glutes properly. You can find lots of great ideas on exercises and even a test or two on this thread:
Engaging the glutes ?
I've actually found that doing weights at the gym have improved my backside more than my at home videos (but keep in mind I'm not a floorwork junkie, nor am I a barre fan). New Rules of Lifting for Women (NROL4W) helped, but not as much as The Female Body Breakthrough (FBB). Some of the key exercises were deadlifts of all kinds, but especially straight-legged or Romanian (what usually passes for deadlifts in DVDs); squats of all kinds, but the 1-legged variety seems to get the glutes extra good; and bridgework, both on the floor and on the stability ball (also hamstring roll-ins on the stability ball). When doing lunges and step-ups, which are also good, you apparently activate the glutes a little more by stepping back a little further.
Kettlebell work has definitely helped my rear view. All of that work activation the posterior chain for swings, cleans, snatches, and more makes such a difference. But you'll need to spend time learning how to do these moves properly, if you don't already know.