I been trying to determine what are some good reasons for what drives people to SQL Server 2008.  Isn't 2005 just running fine?  Do I really need to move to SQL Server 2008?  Does Encryption lead me to test drive SQL Server 2008?  

Here is an article that comes up with some reasons why small and medium size business should make the switch:
http://viewer.media.bitpipe.com/1182112995_571/1258754294_716/SQL-Strategies.pdf

What do you think are good reasons to move to SQL Server 2008?