Seriously? Remember when movies couldn't be a serious form of story telling?
Planescape Torment, Deus Ex, Neverwinter Nights Mask of the Betrayer, The Witcher 1 and 2, Knights of the Old Republic 2, Fallout 1 and 2, Fallout New Vegas.
I can keep going on but people who think games can't tell a good story probably think movies can't either.