David Lobenberg was the style we learned for painting wet, loose, bold brushstrokes. His DVD is available on his website. (I'll try to find a link to his website and post it here for you.) Website: you will need to look up davidlobenbergart.com (Sorry I'm experiencing technical difficulties in posting this link.) His DVD is $45 but you might be able to get a copy locally from Colleen Reynolds. (David also has a DVD for a pen & wash technique but I didn't find a price.)
Kay Adair did this beautiful portrait of her grandson in a monotone color palette which is amazingly real to life.