I know this doesn't fit your requirement for wood, but for anyone who wants a more metal/tech look (in black or chrome), try the modular steel shelving such as the InterMetro line.

http://search.yahoo.com/search?p=InterMetro&ei=UTF-8&fr=fp-tab-web-t&cop=mss&tab=

It is rock-solid, very modular and changeable, easy to assemble, inexpensive and good-looking. I built a tall AV rack recently and put their large casters on the bottom, which make it very easy to pull the rack out to get at the cabling.