That fizzing you hear could be one of two things:
(1) My overcaffeinated brain, which thinks I need to be out running around, going on a 10-mile hike, or otherwise not sitting at my desk - and I haven't even had that much caffeine the last couple of days!
(2) The fuse on Project Egbert and its various relatives, which is currently about 5 months long, including holidays, and burning merrily away. Well, as of last week's review meeting, there are No More Hardware Spec Changes, so I just need to do some bench testing on key bits of the design (so's to make absolutely certain that it'll work when we build it), finish the hardware design (in true Engineering Department of One mode), write the new firmware, and make it all work.
This may involve some late nights and quick-turn PCB runs.