I may have already mentioned this, but SunFreeWare is simply amazing. Everything you could possibly want in a modern unix environment, they have binary packages for.
This is not such a big deal for those who are already using a modern distribution of unix (or perhaps those who are involved in BigAdmin) but for those of us who are supporting old unix, being able to install things like
gcc, is an absolute godsend.
I find the number of Sun hosts that are mentioned in the transfer statsto be quite amusing. (regardless of the fact that those stats seem to be out of date).