I find KotOR 2-s amnesiac beginning a funny example, as a lot of people don't realise that the amnesia goes as far as..a week? And it's just temporary too.
Are you referring to KOTOR's amnesia? It's hard to say it only lasts a week when there's really no context of time given in the game.
You spent 2 days on Peragus, and I doubt the trip on the Harbringer (or whatever it's name was) took more then a couple of days, especially since you didn't even arrive at the destination. But anyway, my point was that it wasn't a complete amnesia with "Who am I?"; it was temporary, and you lost a few days only, most of them spent unconscious.
Usually I'm bothered most when they just take a typical fantasy creature and rename it.