I must say, this is the best episode in quite some time. While, yes, they did fall back on old habits of using a lot of cutaway gags in the first and second acts, this was pretty epic, if you ask me.
COnsidering I didn't know it was going to be a 2 parter, I didn't even see the ending coming.
I figured it would either be a dream, or Stewie would feel guilty for what he had done, and used some sort of device to either clone Lois or bring her back to life somehow.
But seriously, Stewie pulling off what he was talking about for years was the most amazing thing I've ever seen. I know he came close with the episode where Peter cheated Death. But this was the only real time he ever got the guts to do it.
I will say, the Lake House gag, while funny, seemed completely unnecissary. But it still had me laughing like hell after I got up from that half hour nap called the Simpson's Halloween Special.