What is the best way to cook lamb shoulder?

My friends and I made this for Easter one year. It was delicious and easy (sometimes I'm a lazy cook...even on holidays!) and the leftovers made great (what my mom uses to call) Greek sandwiches on pita with marinaded artichokes, tomatoes, red onion, olives, feta and yogurt.
http://www.jamieoliver.com/recipes/lamb-recipes/incredible-roasted-shoulder-of-lamb-with

Is it a roast? If you you can season, sear and oven roast to internal temp of 135 for med rare or 140 for medium. I also like to use lamb shoulder for stew doing a long slow braise on the stovetop or in the oven.