Lennon's song "God" from off of Plastic Ono Band is a pretty succinct summation of a large part of my beliefs on a higher being. So that song is kind of important to me.
I've always loved the off-beat explosion at the end of "Remember," too. I mean I love the whole album, but that moment always makes me laugh. (I know it fits, given he just mentioned the Nov. 5th plot, it's still just exceedingly random.)