In case you're not on 10gen's various marketing/mailing lists, 10gen announced free online training this week: http://education.10gen.com 'Classes' start in October and there's two tracks - one for developers and one for 'DBAs' (the nice thing about mongo IMO is that you don't have to be a DBA to get started).
I have signed up for this training. Good its free and videos can be downloaded from youtube! And they provide a certificate on successful course completion too.
If a regular clown is funny, then a larger clown would be funnier. Math. Verified by this tiny ad:
a bit of art, as a gift, the permaculture playing cards