Personally I have grown to hate the current Doomworld layout (HTML / table problems and such) but it looks like other people seem to like it quite a bit. Check out Blood Force to see what I mean. Um... yeah. Looks a *little* familiar. Here\'s their forum, not that I am suggesting anything. I feel that if you want to emulate the DW layout you should at least get creative like The Indy Project did.
Update by Mordeth: Anyone \"emulating\" parts of Doomworld can expect me to shove a hot poker up their ass, along with word on some legal goodies expected to head their way shortly. Live in fear.