Bug resurrected after 120,000 years: Scientific American:
"The tiny purple microbe, dubbed Herminiimonas glaciei, lay trapped beneath nearly two miles of ice in Greenland. It took 11 months to revive it by gently warming it in an incubator. Finally the bug sprang back to life and began producing fresh colonies of purple brown bacteria."

You just KNOW some idiot is going to leave a petri dish uncovered some night and BAM it's out the door! This could be the Mastodon Flu bug or God know's what else.