As a food animal, of course! The distinction between mutton and lamb being one of the awkward parts of the question, with "lamb" being applied to different ages of the critter and mutton having something of a negative connotation for some.
It is BBQ season in Beijing, and street side grill places are everywhere. I've been enjoying the grilled sheep at a Xinjiang place a few blocks away, along with cold, fresh beer and maybe a plate of chao mian pian. It has become a summer ritual for me, but I realize that summer BBQ takes different forms around the world. With that, let's hear your thoughts on that sheep, and maybe whatever summer BBQ is for you!
http://beijingdaze.com/images/2009/10/kashgar7.jpg
http://beijingdaze.com/images/2009/10/kashgar6.jpg
The pictures aren't from my local place, but they're similar.
[Grrr! I really wish the Great Firewall or whatever would let the editing tools load! I'd appreciate it if someone could tell me the correct markup for images and links here.]