Oblivion was widely criticized for it's overhyped Radiant AI, but in the end the NPC's really did all eat, sleep, work (if they had jobs), and socialize every day. It seems like in Skyrim every NPC has some scheduling, like working at a smith or chopping wood, but I get the sense that they don't have the robust schedules of Oblivion's NPC's. Many NPC's in this game don't seem to have beds, and I swear some of the shopkeepers never even leave their shops.
Also another point that almost warrants a thread of it's own is the fact that NPC conversations are all but gone from Skyrim. I know everyone made fun of the "I saw a mudcrab" NPC exchanges in Oblivion, but I preferred that to the NPC's just not socializing at all.
