Well, you can get it processed, but it takes a long time and it's expensive. I'll shoot more of it because I love the colors, but if I can't get it to scan well even after I get my own scanner I probably won't be too bummed when it's discontinued. I guess there's only one place in the US that still processes it...
I wish they would make one with the same colors but E6 process

Punx: You left like 2 seconds after you started talking to me on MSN, so look for the Peleng 8mm fisheye on Ebay if you want to get a fish for your Pentax. They're about $200-250. You'll need an m42-K adapter; the lens usually comes with an m42 to Canon or Nikon adapter, but you can screw that off and use the K. Ebay search results

You can also look for the Pentax/Asahi 17mm fisheye, which is also in m42, or the Vivitar 15mm which I'm not sure about. Those ones fill the whole frame as opposed to making a circle.