DKMS (by Dell) is included in Ubuntu 8.10, allowing kernel drivers to be automatically rebuilt when new kernels are released. This makes it possible for kernel package updates to be made available immediately without waiting for rebuilds of driver packages, and without third-party driver packages becoming out of date when installing these kernel updates.
My servers, desktop, and laptop all use dkms and I just realized how nice it is. It isn't installed by default on 9.04 desktop edition, but that's easy to resolve. apt-get install dkms