AHA! I must have lifted it from SMB3, then. Incidentally I noticed a bit of "Rhapsody in Blue", too. Mystery solved.
Uh, well it wasn't an actual remix attempt per se, so it's probably best to leave that source unclaimed for other people.
The funny thing about Star Trek: Countdown is that it more or less spoils the gag when Spock enters old Spock's ship. I laughed, but not for the same reasons everyone else in the theater laughed.
Also OMG NYOTA
To make a short story long: I stumbled upon the Crescent Island track (or is it Crescent Moon Island?) and I liked it, then forgot about it. Later on when I was doing one of my daily experiments, the source made a resurgence in my consciousness and I ended up laying it down. Here's the thing though: rather than playing it straight, the version I put down morphed into this strangely familiar tune that I can't quite put my finger on. Anyone recognize it?
TL;DR:
^ More like http://www.digitalspy.com/movies/a154141/wolverine-given-multiple-endings.html
(linking to a page anyone can edit = teh fail)
...but yeah, it's some sorta gimmick to compensate for the early pirated leak of the film.
I got a bunch, couldn't find the Simpsons one.
EDIT:
William Shatner Presents
The Avengers
Wolverine: Origin of an X-Man
Contract #1
John Stanley's Nancy (?)
Blackest Night #0
The Stuff of Legend
I also got several comics that were given away, but weren't part of the FCBD listing. Some sorta store-specific clearance, I guess.