It's a cloudy wheat beer. They do vary greatly in taste but generally they have a very thick and full-flavoured, almost creamy taste. Sometimes they can be quite 'floral' too and have a definite hint of citrus.
If I was going to generalise I would say it was somewhere between a pilsner and an ale. Sharp, full flavoured and refreshing but a little 'thicker' and creamier than you regular beers.
If you want to try something new I very much recommend it.
In fact, I recommend that you try any beer you can get your hands on. I just bought a keg of Köstritzer Schwarzbier lastnight and I thought I had died and gone to heaven. I had never heard of it, never seen it before and just thought I'd give it a bash.
I only wanted a couple of pints for a Sunday night but I ended up having a few more than that, it was so bloody magnificent.
Black as night and a nice and subtle roasted peanut flavour mixed in with that wall of pure dark heaven.
Golly-geenit, now I need to have a glass.