Mead has the consistency of wine. It normally has a high alcohol (10-19%) and can be served still or sparkling, dry, semi-sweet, or sweet. As for difficulty, a traditional mead is simply water, honey, and yeast. The hardest part about making mead is learning patience.
I've heard that it's sort of an acquired taste. I have a friend that has made it a few times, but I never got to try it. He makes it for when he goes to special festivals. I didn't know it has so few ingredients.
I'll have to try some commercial products before attempting to make it, I guess. Mead isn't very popular in America, or at least not in my area, so I've never had it. Best see if I even like it before I attempt to actually brew some.
I find the popular varieties a little too sweet for my taste. It is honey wine after all! Strangely, although it originated here in the UK, I tasted the best mead ever when I was in Alaska a few years ago. Here's their website.