I know I've parodied this song before, but the syllables fit so well, and there are no better choices I can think of... this one's inspired by tax class today.

"Depreciation" to the tune of "Locomotion"

Everybody's paying a lot less tax now
Come on filer, do depreciation
We're all reducing basis at a speed too fast now
Come on filer, do depreciation
Some more acceleration so we're getting a break
Less income for the IRS to come in and take
So come on, come on, do depreciation with me.

We used to match that cost but,
Come on filer, the rules, have changed.
Allowed deductions rearranged

Straight line depreciation was the rule for years now,
Come on filer, do depreciation
But A.C.R.S. numbers give you more to save now,
Come on filer, do depreciation
We'll shorten all the schedules and increase the rate
Erase the salvage value and it all will be great
So come on, come on, do depreciation with me.