I'm a big advocate of IPv6. I believe it's the way forward, it's what IP should have been in the first place. One of the hold-ups has been Google, who are being a little overly careful with their rollout of the technology, only allowing use of Google services, with some exceptions, from specific ISPs.
Today I switched Harritronics DNS to use Google's IPv6-supporting servers. This is a particular group of servers that support IPv6, regardless of ISP. If you use Google Apps and want to do the same thing, point anything that currently points at ghs.google.com to point, instead, at ghs46.google.com.
I'm sure you don't care, but I do. I like doing things properly. And supporting IPv6 now is doing things properly.