Nice one. How much did it cost in parts? What tools did you need? How long did it take you?
Prices are per wheel as I haven't been able to start the second one yet, so you can double it for a set.
Rim £55 from Bricklane Bikes (Hubjub have the anodised grey cheaper but no stock of the black, and black bits go faster)
Spokes £75.98 for 40 from Singletrack Bikes (this worked out cheaper than buying the 32 I actually need and will leave me some spares in case I'm clumsy or daft; I might also see if my LBS wants some in exchange for casting an eye over the wheels to check they don't think they're too much of a liability, but I think it's ok so far

)
Nipples £8.45 for 50 also from Singletrack Bikes
Rear Hubs £37.99 at CRC (front hub is £19.99)
Total £185.91 rear (£353.83 all in). Emailing around several wheel builders for this build they all quoted around £405.
Tools, I used my bike frame and some cable ties for a truing stand, so that was free. I already had a selection of spoke keys from problems with my factory built shimano wheels. I needed a Sapim CX and CX ray holder which was £7.57 at amazon.
Timing probably about 6 hours maybe a few more. I did it in dribs and drabs over the weekend before finishing last night. It's quite a tricky process to begin with, with lots of reference to the book, and a few mistakes along the way. I imagine I'll be a little quicker with the front as I'll be more experienced and the front is technically easier (spoke lengths are the same with no dish to the wheel).
Was it worth it? I'm not sure. It was interesting, and saved me some money while still getting wheels suitable for my 95kg frame. It earned me some man points and will make me more confident about a few more bike maintenance tasks. I could earn a lot more than £50 in 6 hours locum shift, but I had more fun building the wheel than I'd be likely to at work.