multiband compressor sidechaining - what would/do you use it for?

[Siem]

Some of you might use a Drawmer 3-some and some compressors to do this or a semi complicated group/bus thing in a sequencer could also do the trick. I'm modifying an Eventide's 3-band FIR compressor preset to have a sidechaining input and I'm very curious to the possibilities.

What kind of interesting ideas for mixing or sound sculpting with a multiband sidechaining compressor do you have in regard to electronic music?