I just signed up for the next  Sketchcrawl in Jan 2009.  It promises to be a lot of fun - meeting people I've never met before, trawling round Sydney leaving a trail of pencil shavings and discarded coffee cups, sketching anything that moves.  OR preferably, anything that stands perfectly still for  5-15 minutes.   Join in!  It's a worldwide movement, and chances are there's a sketchcrawl happening in your town.  And if there isn't, you can always start one.