I absolutely loved the way they've done Jin and Sun's backstory. Both episodes were lovely, and I like the different POVs. It is hard to do that and not seem repetative but it really worked. Their story is just *so* may favorite on this show...

As for Walt, I actually did see that coming, but only because I suspect he has these hidden powers that accidently set off things (like Polar Bears and fires). Clearly, too much Rambaldi on the brain!