The Sarcasm Z80 Assembler rules to an arbitrary extent.
I once created some music. Ninety Seconds is kind of cool, but Life with Television is about as depressing as television.
I also wrote a little something to demodulate Caller ID signals and some nice instructions for replacing the control knob of an Alesis Micron but, honestly, who cares?
...and then there's whatever this is an excuse for.