i happen to love love love Coen Brothers films! it's hard for me to really choose which i liek the best but out of the ones listed i have seen and enjoyed: Barton Fink, The Big Lebowski, O Brother, Where Art Thou?, The Ladykillers, No Country for Old Men, Burn After Reading, A Serioius Man, True Grit and Fargo. I think they did great with their remake of both the Ladykillers and True Grit, specially the latter, they really did well at capturing the orignal story with that one. Barton Fink and A Serious Man are pretty underrated flims in my opinion. I do think Fargo and No Country for Old Men are at the top of my list though.