Can't find a figure drawing class in your area to work on those gestures? No problem! Just go to:http://www.pixelovely.com/tools/gesture.html and choose between all models or nudes only, male or female, or animals for variation. An automatic timer will change images from every 30 seconds up to 10 minutes. Now there's no excuse for not improving your draftsmanship skills through gesture drawing!
Some samples from the site: