Haha, I just went through the first 2 tutorials, it was very very fun.
It all ways giggle like a school girl and bounce off the walls when ever I finish something and actually get it to work,.
hehe dunno if that's considered nerdy or what.
I specially love the way you have key terms hi-lighted with additional explanations, though I already know a lot of the terms, its a very good quick reference for neophyte programmers. One thing though, (personal, I think) Some of the wording used, and sudden formulas thrown in may be confusing to those less mathematically/technically inclined like those that are just getting started with programming (but hay that's what Google/research is for right?).
All in all, your tutorials are a 9.0-9.5 on my Richter scale, it would definitively be one of the first things I would recommend to anyone getting into C# + Unity.