Fitting in with the summertime galaxy theme, after all of the good ones are gone, I settled on the Fireworks galaxy. It is quite dim at 10 magnitude, and I could barely see some spiral arms over the background noise in the individual snaps. However, with about 40 images taken in a short period due to incoming clouds, I was able to get a phenomenal result. The subframes were 15 seconds at 1000 ISO.
UPDATE: I again tried some manipulations on the individual color channels, and spent a little more time balancing out the resulting colors. I think I have a bit better representation now: