Some really good ones are cold mountain, green mile, legends of the fall, just watched looper not too long ago in theaters and i thought that was really good too. man on fire was also a really good movie but that was already mentioned
I love mafia movies. Try watching scar face, carlito's way, good fellas, casino and the god father trilogy again.
I also love horrors. Try watching nightmare on elm street, silent hili, paranormal activity trilogy, omen and Arthur if you havent.
I also love action thrillers. Try watching the orphan, sin city, house of wax, 2010, lucky number slevin.
I also love adventure so try re watching king kong, Jurassic park, star wars and the lord of the rings trilogy.
All these are classic so take your pick.