I also survived (in the one mistake pool) by picking the Chargers.
I did a quick search and found:
2009 - I can't quite tell what happened, but 3 teams were alive in week 17 (including Jason's son and toughbuff1)
2010 - Bob Green lost in week 16
2011 - SportHenry won in week 10 (not sure how far he went after that)