Mark Huot
Mark's been hard at work cranking out some very useful ExpressionEngine extensions- many related to the publish page. He also wins the prise for coolest main site page I think I've seen. Check out his code section for the EE goodies.
pdx : eeblog
Yoshi's LinkList module is powering this list 'o links! You'll find some other handy plugins, such as 'On this day' and the 'Birthday' plugin, as well as a few EE tips and tricks.
pMachine | Publish Your Universe
The center of it all.
reedmaniac.com
He's a coding god, a snark master, and the CTO of pMachine. No, I don't actually know what a CTO is, but I do know that this is Paul's playground on the web. Visit to discover the deepest, darkest thoughts of one of the powers behind EE's code. Those thoughts frequently revolve around walking the dog and soccer. Also, a surprising number of groin injuries. Who knew?
Shelley Powers
Yea, I'm linking to a defunct blog- Burningbird- I hope the archives stay up forever. It's one of the few non-fen blogs I actually followed. If it does disapear, Powers Planet is the new place to find Shelley's current stuff. But I loved Burningbird. There was neat art and code talk and blogsphere talk- and I think it was the first time I really noticed how male dominated the whole 'blog thing' is. Maybe because it's not in fandom circles. But in the circles that make the $$$ and get the press? It tends to be. And for what it's worth? If you haven't read Guys Don't Link you really should. It's what got me reading her blog in the first place.
SimplyGold
Lots of nice templates, though only a subsection is EE specific (see in particular these 6 designs). Not that it matters- the template I'm currently using came from there. While it lacked the EE tags, it doesn't take long to swap out the placeholder content for tags. Stop in, say howdy, let her know you appreciate the EE templates in particular. Maybe we'll get more!
Solspace
The Solspace crew is a full service design company, but I link to them here for their excellent offering of ExpressionEngine plugins, extensions and modules. If you're looking for a third party module, be sure to browse through their offerings- both free and pro. And if they don't have it, they can build it.
VayaDesign
Oh! Handy plugins (I'm using the pagination one elsewhere) from this web development company. The link goes to the blog, but the whole site is worth browsing.