ScrubIT (filters pr0n, so probably not what you want): "ScrubIT offers clean, reliable, and speedy DNS service FREE of charge. Our filtered DNS scrubs out the bad stuff and is absolutely simple to setup and use. Try it today!"
* 220.127.116.11 * 18.104.22.168
OpenDNS (you'll get ads on DNS misses): "Taking a few minutes to unbundle your DNS service from your ISP's Internet connection means a safer, faster, smarter and more reliable Internet experience for everyone in your household."
* 22.214.171.124 * 126.96.36.199
vnsc-pri.sys.gtei.net (no idea who or what this is; but their DNS sure is open):
I have an old Gateway that came with 64 mb of RAM. I added and added and it now has about 320 mb. I also re-installed the OS before giving it to my kids and it seems as fast as my new Dell (although I know it isn't).