Arkham Asylum is great fun. Your comment about Oblivion got me thinking about Morrowind, and I was wondering what mods were available to modernise it. I found Morroblivion.com which updates the graphics, though you need both games to install the mod, and it's not going to be Morrorim (perhaps fortunately), though Oblivion itself could do with some Skyrim enhancements.
In the meantime Skyrim is already the best bits of Mo and Ob, and much improved, and with much more. My advice would be to hold out for it - I mean you realise that both games take up a lot of time, and having both running would kill your social life for decades.
Oblivion is merely great. Skyrim is greatest.

