I stumbled across the NKC Electronics ebay store via a post on the AtariAge forums, and purchased an S-Video cable for the Atari 800 so I could plug it into the tv in my office. Wow. The difference compared to RF is amazing:

(as seen on the tv in the Petroglyph lobby, it may not look it but the edges are crisp and the colors clean. Thanks for the lovely orange, iPhone)

If you’ve got an old Atari (or one of the handful of other computers/consoles he supplies for) that you’ve considered blowing the dust off of and plugging in, I recommend his stuff. Sent a couple questions that he replied to promptly, and I had the cable in hand within three days. RECOMMENDED WILL BUY AGAIN A+++++!!