I couldn't stand more than about 2 hours with the potato people of Oblivion, so given the fact that I have spent about 40 hours with skyrim (and still playing), I suppose there can't be much about Oblivion that is better for me! I'll acknowledge that 2 hours isn't a lot to judge something on, but since Skyrim managed to hold me for longer than that , it has already done better.
The Inventory/UI in Skyrim is a bit arse though - I can't remember Oblivion's but Dragon Age's was a hell of a lot better. You actually got some useful information about a weapon, for starters.
I do, however, *really* like the whole skill/perk system. Now I don't have to pick a bunch of numbers at the beginning and then force myself to play through the results. I can pick a race with a certain selection of natural advantages, but then play how I want. I tend to lean toward rogue characters, but this time I can play as a rogue that wears heavy armour and has a few spells tucked away for emergencies, should I wish to.
I've also been pleasantly surprised by the archery skill. boosting Archery and Sneak has me taking out many enemies in one or two hits before they even see me, and I can always fall back on my two handed sword in emergencies ;-)