Haven't done one of these in a while:
The case for Watchmen: If you're reading this, you know all about Watchmen.
The case for "Two Minutes to Midnight": Has a pretty catchy chorus. Guitar solo is a little disappointing. Here's the video for those unfamiliar with the song:
It's very important that you remember that you're voting for the song, not the video. We want to keep these things as scientific as possible.
(Yes, there will be more of these things--they just won't involve Alan Moore comics. For the record, I voted for Watchmen.)