And I finally found one; it's the dream monitor: Eizo's FlexScan F980. It's got features up the wazoo. Like most top-end monitors these days it contains a USB hub. But it's not just there for devices like mouses and keyboards, the monitor itself is actually a USB device. You can run a program on the PC which controls the monitor settings through USB, which should be pretty interesting to mess with.

UPDATE: Matt Robinson notes:

Everyone knows that the Mac has had a sensible, innovative approach to hardware that the PC can't approach due to the generalisation and generic-componentisation that they have to deal with. When you control the hardware and the software, implementing an new power/graphic/usb socket is simple - for a PC manufacturer it's a bloody nightmare. I'm not excusing them, but it's not always that Apple has the best ideas: it's that Apple has the best ideas AND the ability to implement them - to change their own standards, because no one else relies on them.

I'd suggest that Apple fits the "benevolent dictatorship" model and PC is more like "sprawling beurocratic democracy". Steve decides to change something for the better and he'll kick a bit of ass, raise a bit of hell, and it'll get done. Back in the PC world, someone has an idea, but for it to be implemented, it must be economically feasible, it must be adopted by sufficient manufacturers to become popular, and have support along the line from hardware vendor to software drivers and support from Redmond. All this via endless meetings, forms in triplicate, business flights to visit allied companies, etc.

Yup. That's called "whole widget" product development. Cons: costs more, limits choice. Pros: you get kickass toys ten years before everybody else does.