I wanted to master Mark Longworth's "Magic Spell" to make it "dance music-friendly," which means really loud, bright, heavy kick, etc. But, I hate killing dynamics like that. I thought that if parallel compression could work for drums, maybe it could work for mastering...
So I bounced the tracks down to a heavily "squashed" track using an L3 Ultramaximizer, with some extra low end to push the kick and some high end for sparkle. Then, I bounced the tracks again, but mixed the squashed track in around -12dB.
I thought it worked very well, and it's the version I'll be putting behind the video. Now, not all DAWs can handle this task elegantly, but Sonar is sample-accurate so the tracks can co-exist in parallel without any weirdness.
Anyway, this probably isn't an original idea, but I haven't seen it mentioned elsewhere and thought y'all might find it interesting. Try it out and see what you think.