With a new website and sponsorship from Digium the guys take you through installing various aspects of Asterisk 1.4 and sme friendly jabs at Grandstream (which I fully agree with). Episode 4 covers setting up Asterisk 1.4, sip peers, voicemail, conferences, gtalk and more.  It's still not the best production out there but for a couple of guys talking about Asterisk it's not bad! Episode 4 can be found here.