Anything special about a UV protector

Pick it up and try it out. Record the same shots with and without it and see if there's a difference. If there is, you've only lost $20 and if there isn't, it's super-cheap insurance against damaging your lens.
 
I always say that if you're going to use a filter over your lens, you're best served to get the very best possible one you can. Every single frame of video you shoot, is going to be shot through that filter. If you get some cheap piece of junk that degrades the image, then what was the point in getting a top-of-the-line HD camcorder in the first place?

Phil makes a good point, you can try it out, but I've seen several and I have no use for the cheapos. I use the B+W, and I've heard people are satisfied with the Hoya MRC. I actually don't use a filter at all unless necessary (i.e., shooting in a situation that's putting the lens in jeopardy).
 
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