A bit late, but nevertheless, I wanted to let you know that there's an update you should all be aware of ... the samples and sample databases! 
- SqlServerSamples.msi -- 19,092 KB
- AdventureWorksDB.msi -- 27,992 KB
- AdventureWorksDBCI.msi -- 29,116 KB
- AdventureWorksBI.msi -- 7,592 KB
- AdventureWorksBICI.msi -- 8,814 KB