Cool logo. I like the concept. The cube always speaks to geekness. I even like what you have done with the G on the one side. However, I'm not certain it fit's what I am looking for.
I love the geek looking at his monitor. His neck looks a little separated from his shoulders though. I am not certain I like the string coming down behind his head. I know you were going for the "glasses" look, but I would prefer to see him with headphones than glasses.
I really like the new updated logo with the headphones. The gray coming through around the guys neck looks a bit strange. What can you do there to still make it look like a monitor? Maybe fill the monitor screen with a bunch of lines of code in a light gray text. Almost so it is indistinguishable from text, but enough to see he is writing code.
I like both versions (the one facing towards us too). On #63 can you shorten the guy so you cannot see his forehead? Also, the fingers look a bit strange. Can you show him working but to where you don't see much of his fingers but can still tell he is working?