you gotta rank inception and dark knight up there for sure
was the matrix in this decade? if so thats definitely up there, same with saving private ryan
the departed is up there also
any of the will ferrel movies...
blades of glory, talledega knight, step brothers, anchorman, kicking and screaming (i dont care if its pg its funny), semi pro... the list goes on and on
school of rock was good too and the dark knight
harold and kumar
^this along with
-Requiem For A Dream
Saving Private Ryan was made in 1998 i beleive, so that wouldnt really be within the last decade?
-No Country For Old Men
these /\ and...
Pineapple Express, Lord of the Rings series, Transformers, The Greatest Game Ever Played, Invictus, Miracle, The Batman Movies (both were good but TDK was better, you just cant fotget batman begins), Gladiator, Anchorman, and The Pirates of the Carribbean series.
Ill try and name some less main-stream, but still great ones:
-Into the Wild
-How to Train Your Dragon
-The Hurt Locker
-Kiss Kiss Bang Bang