Take your pick, both are 4:3 ('fullscreen' is such a misused description because if you have a widescreen tv then 16:9 is your 'fullscreen') because that's probably what the source is.

NTSC region 1 DVD: http://www.dvdpacific.com/item.asp?ID=76709
PAL region 4 DVD: http://www.devoteddvd.com.au/shop/product_info.php?products_id=681

A lot of films are shot on 4:3 footage and then cropped to 16:9, which is why companies (MGM in particular) release DVDs with 4:3 on one side of the disc and 16:9 on the other, the 16:9 is the theatrically correct aspect ratio but the 4:3 shows more picture.
I just got the region 1 DVD of Freaked aka Hideos Mutant Freekz and it's been cropped from 4:3, my German 4:3 release shows more picture, further more they (Anchor Bay) royally stuffed up the R1 release by burning in the 3:2 pulldown, it looks terrible on a PC!