Underdog Sports

I do a presentation and showing video clips of the greatest stories of David against Goliath. I came with the Miracle on Ice, The Hoosiers, Rudy and Susan Boyle (latest singing sensation), but I need a few more that are not sports, suggestions, sports or otherwise? Thank you in advance!

New York Giants against the Patriots. New York Giants should not even been in the playoffs because they didn't win their division, but they did in wild card team and made their way to the final. Pats won all matches in the season and after season, they should certainly won.but their na