http://www.flickr.com/photos/fab-slab/5013680826/

http://www.flickr.com/photos/fab-slab/5013680786/

I have been fooling with SketchUp, but I really needed it for my latest project.
The a great thing is that the drawings are scaled, so you can measure off them.
They are reliable and "real"...
Also, you build them in your mind before you build them in your shop... so, you make virtual mistakes rather than real mistakes... I am totally sold....
The best news... the application is free!
Being able to go in an out, upside and down, 360 degrees around a project is very cool and educational....
Not selling Google... Just like what it can do....
Here's a link for anyone who wants to give it a drive around the block.
http://sketchup.google.com/intl/en/product/index.html