I used to like Blizzard's Warcraft lore, but all that Bullshit in WoW (Killing off major characters, making things more complex in terms of factions etc.) really has put me off.
TES Lore has always been a bit 'off' to me, I cant explain this feeling to anyone actually, it's really strange. Not saying it's bad though.
But Bioware Lore (Dragon Age) is just insane, they've built up this fantastic world, and have so far only used a small, small, portion of it. There's just SO much in this world, I really really want them to feature more of it in future games (Perhaps a game set in Orlais, Antiva or Tevinter. That sort of thing)