Check this one out, he's got a whole bunch of stuff:
http://www.brickmania.com/Gallery2/war/index.html
I saw a builtup lego tiger last summer at a show. It was pretty cool.
The link doesn't work, because it's spelled incorrectnly, and missing a "." in front of the html
http://www.mechanizedbrick.com/TIGERI.html
Go to www.mechanizedbrick.com to see what else is there