I think your titles are a little too new to be in the "influential" zone. I'd say that:
Baldur's Gate, and before that, Icewind Dale, influenced the top-down party style RPG. Hell, they defined the genre. NWN and it's ilk were some of the best games I can mention, but thy took their silhouette from the originals.
Morrowind made the free-roaming RPG, which then morphed into Oblivion, which in turn created Fallout 3.
And then of course there are the JRPGs. I've not played many, but every single one seems to be a Final Fantasy clone.
EDIT: But the "new" Bioware titles, Mass Effect and Dragon Age, they're pretty influential in their own right. I mean, they're almost identical in play style, but that's not a bad thing and I find them fantastic games.