Christopher David Ryan
I've apparently been seeing this guy's work for years (and, unbeknownst to me, blogged about him already. [don't even bother to follow that link--the image has been taken offline]), but this is the first time I've put a name on it. CDR (which is like, the same initials as my design name-- Caroline Royce Design), does absolutely smashing illustrations in that awesome retro style that I love so very much. I dig it big time. His blog is simple and to the point, and also features a lot of work from other designers.
I encourage you to Check him out.