Region 1 version preorder available (08/08/07), a full month before the Region 2 release on 09/09/07 for two thirds of the price.
Obviously a multiregion dvd player and a tv capable of NTSC playback is necessary (who doesnt these days?), but it has to be noted along with Futurama there have been criticisms of the PAL releases having NTSC to PAL conversion artefacts.
Barts head version also available at the same price.
Look in the vouchers section of here to get it even cheaper!
*EDIT COMPANY NOW IN RECEIVERSHIP, BUY WITH CAUTION*