I am currently lost in the world of Skyrim. Having playing through Morrowind and Oblivion... Skyrim feels like home. The lore is extensive and the imagery is nothing short or stellar. I do highly recommend heading over to Skyrimnexus and loading up on just about every HD Texture pack you can find. OK, you decide as there are so many, but the game's visuals go from stellar to "eyegasmic" pretty quick.
My hour count:
Skyrim: 19 Hours and counting(barely made a dent)