Take a look at tenkeyless keyboards, then. They don't have the numpad, but keep everything else the same as a full-size (104 key) keyboard. For example, the Realforce 87U is a tenkeyless keyboard with Topre keyswitches (same as the HHKB): http://elitekeyboards.com/products.php?sub=topre_keyboards,r...
Or if you want Cherry (rather than Topre) switches, the Filco Majestouch 2 Tenkeyless is a good option: http://www.diatec.co.jp/en/det.php?prod_c=765
Or if you want to save a bit more space by pushing the keys at the far right and on the top row up against the main section of the keyboard, there's the Noppoo Choc Mini: http://www.amazon.com/Noppoo-Mechanical-Gaming-Keyboard-Swit...