Yeah, I've messed around with Tom Sawyer, and lots of Led Zeppelin riffs as well, somewhere even found an mp3 of Stairway to Heaven for borderpipes.
We've played around with Elvis, Michael Jackson, or Beatles medleys, in fact the tune that got us started on our slide to the depths of bagpiping depravity was Yellow Submarine, though my other band had started it all with The Lion Sleeps Tonight. Sometimes it seem we sit around at practice seeing if "this works on pipes"
For myself, I still learn go through my collection of music books, sheet music, downloaded tunes and vids to learn "normal" pipe tunes, the playing of which is more satisfying to me, but as I've learned, the general population reacts to what it knows, it bums me out that people would rather hear Long Way To the Top or Shipping Up to Boston rather than the thousands of tunes written specifically for the pipes. I know about 500 tunes (I made a list) but the three bands I'm in tend to play only about 50 different tunes and the general public seems to know only two, AG and STB (the Old Spice tune). But
as long as we are bringing the pipes out on occasions other than parades, weddings and funerals, and getting a good reaction, it's good. We are now playing bar gigs nearly every weekend, and have gotten some amazing gigs out of this, the one that sticks in my mind is playing the 3rd Marine Division annual reunion, we were worried that these vets of Korea and WW2 (yes a few still around) would not like the rock and roll pipes, but by the second tune they were up and dancing, and even invited us to play the next year in San Diego. Good luck on your albums, I have something in the works myself, and keep piping.