Reconstructor is a Live CD creator for Ubuntu Linux. It uses the Ubuntu Linux Live CD as a base, and then allows customization of boot screens (usplash), gnome settings, and software (you can also use the chroot environment to make other changes before creating the live cd).
I spotted it here, but the projects web site is actually found here
Reconstructor 1.0 Stable is now available…
-Multiple Architecture Generation: can now build iso's for x86, PowerPC, and IA_64 — thanks to jonathan for helping figure that one out…
-Updated French, Basque, and Spanish translations