Strange TV problem

I'm getting like this, "wave" on my TV screen. It's a little clear bar that moves up my screen. Like a Radar or something. I know it's the TV and not any of my players\consoles because it's on all of them. It's barely even noticable, but it's been bugging the crap out of me. Any idea what this could be?

Oh yeah, I have a standard TV set. Not HD or anything like that.

Perhaps you need to lower the refresh rate of your eyes.