Sinuses: Item Number One on "Things That Suck"

I've had on-and-off trouble with my sinuses for about a year and a half now, resulting in a sinus headache setting in on average once a week. A couple of weeks ago, though, the co-worker of mine at The Store who manages the health foods section told me that we were now stocking Neti pots, and I've been waffling on whether to try one or not. I'm now definitely leaning toward trying it -- in fact, I'll probably buy one either tomorrow or the day after -- but does anyone out there have any experience with using a Neti pot? From what I've read, it doesn't sound like some B.S. "holistic medicine" type of thing; it actually sounds useful. Anyone?