For those of you in Austin, TX, there is a local store that sells adjustible height desks[0]. I haven't actually bought one yet, but it was nice to play with them to see what they are like.
http://www.nextdesks.com/buy#!/~/product/category=1944379&id...
It does seem ridiculously expensive for a motor to drive the desktop up and down. But I'm trying to fix a shoulder injury that seems to have gone chronic. We shall see...
I also put my monitors on an Ergotron dual monitor arm (http://www.ergotron.com/tabid/65/PRDID/355/default.aspx) so I can adjust the height of the monitors for sitting vs standing.
Overall I'm quite happy with the setup.
As far as power goes, my desk has a hidden power strip on the underside. It powers the lift feature for both legs (so there's only 1 wall plug), but you can also plug in your monitors so you don't need to have 10' cords on all your equipment. They also sell a power strip that can mount to the top of the desk, so again you don't need very long cords for all your peripherals (phones, chargers, etc).
For network cables you'll still need a cord long enough to travel to the standing height.