NICE.
I'll leave you some specific comments on specific posts directly within it (the tl;dr being: all excellent very good), but as for what concerns the layout, I think you've got something nice going on!
Personally I'd work a bit more with the visual weight of text on the pages where the posts are all listed, because it's a bit hard to parse where does one post end and the next begin. I'd make the tags and comment link smaller, then add a little bit more whitespace before the large title of the next post in the list. Whipping up a quick mockup in Firebug, something like this:
Maybe play more with bold and italic. I was trying to make the big titles be bolder, but it looks like the font you're using doesn't have a very bold bold so nevermind. You might want to try what it would look like if it were a different (but similar in character) font that has a heavier bold.
One thing that I didn't understand immediately is that each post is click-through, so maybe you want to add the classic "Read more..." link at the end of each teaser.
Probably make the footer space less tall if the copyright is all it's going to contain.
In the screenshot you can see that the search bar button is breaking the sidebar. This is on Firefox by the way.
I like the email subscribe input box! I like the font in it... :D
Maybe in the sidebar as well you might want to try more whitespace between each main item (Categories, Archives, etc.)
The comment sections are supposed to be only accessible if you register, right?
I THINK THAT'S ALL I HAVE FOR NOW you put that little fire icon and you got fire alright
Big honking congratulations on getting this started cause holy shit. Making an entire Wordpress theme from scratch is no joke.
It goes without saying that you've got a reader in me
