And you still haven't played the greatest game of this generation? Mass Effect 1/2 ? Trust me, I was not even into the space sci-fi genre and was really avoiding playing Mass effect but once Istarted playing it, I wasn't able to put it down. It was everything I always wanted from a game. A great story, great graphics, cinematic presentation and some very solid gameplay mechanics. Its an RPG allright, but its much more focused than DA or fallout and hence it feels almost like a third person shooter. Its also not very long, if you avoid the side quests, it will take you only 20 hours to finish the main storyline of each game. You really are missing a true gem of this generation if you haven't played this series yet.
I also do not see Blood Money on your list but since its a little old now, I am assuming you have already played it? If not, then don't even think twice, if you liked splinter cell, you're gonna love this. You can also try Episodes from Liberty city, the story is not as good as GTA IV but the gameplay and mission varieties are better.
Another game you absolutely must play is Dead Rising 2. Don't think of it as a horror game, simply put, its the most fun you're going to have in a game if smashing things is your style. Also give Dead space 1 & 2 a try, both great games.
The Witcher 2 is another latest game that is worth your time.