I wrote an 80's-style power ballad on game cliffhangers for a contest over at Shacknews, and I was one of the top five. I'll find out this weekend what place I was in.
This was a bit of a stretch for me because I had to essentially divorce myself from existing melodies. I've done my fair share of song parodies over at the Shack...
Shub-Niggurath (to the tune of "Bohemian Rhapsody")
A brief take on the Source engine stuttering bug to "Mony Mony"
An Oompa Loompa warning song about Steve Gibson's unfortunate tendency to drop servers
We Didn't Start This Subthread (to the tune of "We Didn't Start The Fire")...just a listing of Shackmemes
Winter of '69 (to the tune of "Summer of '69")...based on a bug where all of the posts after the rewrite were showing up as being made back in January 1969.
...and this is just a small collection. Sometimes, you just have to stretch your creativity into new fields in order to keep your mind fresh.