Since I’m doing a lot of unity here lately, and starting to lay down some teaching to coworkers, here are a couple useful references for unity3d stuff that aren’t too commonly thrown out there.
http://feedity.com/rss.aspx/unifycommunity-com/UVtQUlVb – RSS feed that updates when new scripts are added to the community WIKI (And feedity in general is pretty nifty.)
http://www.google.com/cse/home?cx=002470491425767499270:iugs1ezlsfq a google custom search engine maintained by some anonymous saint, searches the unity references, answers, forums, and a few other popular blogs.
http://www.google.com/cse/home?cx=001712401338047450041:csfhqk-trfa a second google CSE that includes MSDN and the wiki among others, for when you need that extra bit of microsoft reference.
Also, don’t neglect the boys in irc.freenode.net #unity3d, definitely the single most useful resource @ http://webchat.freenode.net/ or your friendly neighborhood irc client.
*Oops! bolger fail. edit to fix the links.