This thread is right up my alley.
Horse The Band - The Red Tornado: http://www.youtube.com/watch?v=bQlobg7r7Co
Horse The Band - A Million Exploding Suns (about Marvel's The Sentry): http://www.youtube.com/watch?v=sMN9eDpFFe0
And being a huge comic fan myself, all of my bands have written songs about comics. Here is one from my current band.
Mind Powers - Where Is The Laser? Ask The Police! (A song about Hank Pym creating Ultron...the title is a reference to the infamous poorly translated line Ultron utters in the Captain America and The Avengers arcade game): http://soundcloud.com/mindpowers/05-where-is-the-laser-ask-the
We also have a currently unrecorded song called Space Widow that makes references to Ego the Living Planet, the Green Lantern Mogo, the Negative Zone, and the Phantom Zone.
The lyrics of two of my former bands, Manchester Black and Gamera! The Invincible, were almost solely about comics. We had songs about The Hulk, Spider-Man, Crisis on Infinite Earths, Green Lantern's destruction of Coast City, etc. If anyone is interested I will post the EPs on here but I don't want to blow this thread up with self-promotion if you guys don't want it, haha.