You want to know what I like about Michelle Last's illustration style? It's not pretentious or overly complex. Instead, it's always witty. And if you read her blog, you'll discover that such a description fits her personality perfectly. Visit her Flickr feed for plenty more goodies.
Oh, and as an aside: If you haven't joined our Flickr group, do so. It's one of the first places we check for talented artists like Michelle.