H Plus Son Archetype (polished) rims (slightly wider than usual road rims which apparently makes clinchers feel like tubs);
Shimano Deore XT M765 (Disc) hubs (went with a balance between practicality (easy to service), price (much much cheaper than Hopes), and performance (some very good reviews);
Crank Bros split skewers (on a whim, sale at Planet X, with orange lever);
Orange nipples from the wonder of eBay that seem to have had the anodized orange survive the spoke key nicely;
Spokes from SJS Cycles - no name, but double butted (apparently that's good).
All guidance came from Sheldon's page on how to lace up a wheel 'three cross' (basically the 'leading' spokes cross three 'trailing' spokes - on the outside of the first two, then the inside of the third). It took a coule of read-throughs to get my head around some sections, but it was all actually quite intuitive. I did have a worry that it wouldn't tension up properly, but it feels like a really solid wheel (and having learned as a built it I'm confident I can fix anything that goes wrong - that'll be tested when I build the back wheel).
It's quite a relaxing job to do actually. Much more so than setting up brakes or gears. Kind of like basket weaving.