Finished product, and parts required:
Start ^
Middle stage
Another 2 Dalek designs from the same photo group on Brickshelf (Wamalug meeting 2 May 2010)
Go to http://www.brickshelf.com/cgi-bin/gallery.cgi?f=429965 for the full photo set, including a mid-sized LEGO Bender from Futurama, complete with cigar.