Nobodys sweetheart is Dyna Moe's portfolio site, but check out her Flickr account where she's been uploading a large quantity of goodness in the form of Mad Men Ilustrated for your desktop and iPhone.
She says that she's inspired by "Aurelius Battaglia, Alice & Martin Provensen, and J. P. Miller (among others) who did advertising and commercial art during the era the show is set."
I can't pick a favorite, however Ossining Calling, #7 Untitled (Green, Brown, and Orange) and Pete is an android made me laugh. All suits are androids, no?
oh yes, of course she has a blog too.