PHP Ascii CAPTCHA using Figlet

i saw a cool captcha today using ascii art. it might not be the safest captcha but i like it. i found a php class that uses figlet (ascii fonts) to make the ascii. http://www.figlet.org/ there's a database of about 75 fonts here really reminding me of the old BBS days. when i used to spend hours making ascii graphics. i have the classes mirrored here - figlet php class sample