[Sai the Dreamer]

Originally Posted by Sun-Ku

seen the eyes and facial expressions during _the one_ Question? Looks like this has triggered his memorys back or convinced him he WAS Kira.

I noticed that too, but think a bit more closely. Giving up your Death Note doesn't just cause some patchy amnesia; you completely forget about everything that happened regarding said note. My guess is that:

Spoiler for Future episodes:

When he regains his memories, it'll be something far bigger, and less predictable.

In terms of the episode, this was KyoAni-level quality. I'm not even kidding! I seriously hope Death Note stays this good for future episodes, because Madhouse has now proven they can produce a very much epic series, and I greatly look forward to them doing so.