Russ Cox is a g'damn genius. You can spend hours being fascinated by his code and writing: http://research.swtch.com/
Same here, which is why I like to idle in the channel when possible (and occasionally answer questions when I can).
People often underestimate how much impact the community behind a language has. The Go community has been one of the friendliest, and also one of the most willing to share its knowledge.
FYI, it's #go-nuts, just in case anybody reading this is inspired to check it out.
When reflecting at certain events a few years ago I remember that I was put off from learning <a language> because I stumbled upon some hostility within the community (I was just an observer in the incident, but it still affected me).
Reading some of the comments made me realise the friendly community and "healthy ecology" of a programming language are very important (Disclaimer: that's my personal experience).