You have to watch this amazing video showing unbelievable bioluminescent sea life, courtesy of Mr. David Gallo. Watch around 2:30 for a squid hiding his aggressive side from a female he is courting. Amazing AND hilarious. Also watch starting around 4:05 for an absolutely jaw-dropping scene with an octopus.
This video is the coolest thing I've seen in 2008. If you do nothing else today, click this link and watch it.
ps--You should also look around the TED site itself. Very interesting stuff indeed.