i found this very nice tool for creating “climbing ivy”.
it works only with obj. meshes,but i love it 
http://graphics.uni-konstanz.de/~luft/ivy\_generator/
my first try:
http://www.chaosgroup.com/forum/phpBB2/viewtopic.php?t=18704 
It is pretty handy
uuh…i didn’t saw that a post exists 
@admins…please delete my post
heh, didn’t mean for that.
Nice teapot!