SQL Server now has its
own section on codeplex
(Microsoft's open source project hosting site). This site includes all of the samples that come with SP2, in a single-serve format. Each
has a section, so you can grab samples for individual products instead of running the monolithic samples installer. These samples should be updated regularly, and will hopefully grow with contributions from our MVPs.
As we near our first public technical preview, you can expect to see some Katmai samples showing up as well!