I was recently thinking about "In the Real World" and thought that it sounded like it would be pretty easy to figure out, completely forgetting that I already figured out some parts for it about a year ago. Of course, I neglected to write those down, so I basically had to re-learn it (I wrote the parts down this time).
In re-learning it, I figured out the fuzz guitar part, and - while recording this, actually - I discovered that I was missing some notes in the glockenspiel part during the chorus. I'd thought it just doubled the synth part, but it has two notes to itself too.