Do they?
I haven't seen all their stuff but I really like Fargo, The Big Lebowski and No Country for Old Men. Hated The Ladykillers.
O Brother Where Art Thou?, Miller's Crossing, Barton Fink, True Grit, and Raising Arizona are all classics IMO too. I think Miller's Crossing is one of the most underrated movies ever.
Blood Simple, The Man Who Wasn't There, Burn After Reading, and A Serious Man are all good too.
Ladykillers is far and away their worst film...but even their other movies considered not as good like Hudsucker Proxy and Intolerable Cruelty are still entertaining to me.