NetworkChuck – This guy is awesome, besides his huge IT interest and knowledge he also sell Coffee (and he does appear as is he is drinking too much of it at times), he speaks on a wide array of topics and do easy to follow tutorials – if you want to learn about various IT-technical technologies, you defenitely should check him out.

He has also been an instructor on CBT nuggets, and it is easy to see why – very knowledgable and charismatic (even if he at times seem to have been drinking too much of his own coffee).