Re: SUPER UBER SPOILERMANIA: The Ending... What Does It Mean?
There is a really good (SPOILER FILLED) podcast on Empire Online (the magazine) with Feige, Taylor and Hiddleston. They talk about a lot of the things I've seen discussed here. Tom Hiddleston says that he thinks three things Loki said/did were truthful, that Loki did love Frigga, the "trust my rage" line and the end line "I didn't do it for him" (as in he didn't do what he did for Odin).
The interview itself is quite good. I've only watched the first part but they cover a lot of topics and manage to hint at a lot of things without actually ever giving anything away. :P