google has released a free version of sketchup, the superb 3d-modeling tool and the blogorati (and the public in general) could not be more pleased! 10 minutes into the tutorial, i created this:

for a guy who cannot draw in 2 dimensions (forget 3), even if his life depended on it, i would say that was a great job.
sketchup is intuitive, easy-to-use and fun!

