I've posted news stories in the past about octopuses opening jars in one form or another. Here's a story from Feb. 8th about a recent experiment that observes an octopus discerning between jars with food and empty jars. The article is found on Ananova:

http://www.ananova.com/news/story/sm_748630.html

More coverage, with photo:

http://news.bbc.co.uk/1/hi/world/europe/2796607.stm

while that certainly is a neat trick and shows off the intelligence of octos, my question is when is someone going to teach one to do something more useful, like maybe doing my taxes?

More coverage of this story below. It includes an excellent video with a local news anchor's commentary:

Jar Opening Octopus Amazes Crowds (http://www.local6.com/orlpn/news/stories/news-204468820030317-110329.html)