So far I have only drawn 3 portraits. In the average that is 1 piece every 10 years! ;)
Rama Hughes is a fantastic illustrator whose new weblog quickly changed my mind about this. His blog/group The Portrait Party was inspired by Tommy Kane, another great artist. (Check out their portraits of each other.)
Basically when you participate in the portrait party, you and a fellow artist pair up and draw portraits of one another. I guess that can be a lot of fun. So here is my pic and let me know if you want to exchange portraits with me.