Sometimes the people on my team try to just sneak stuff by the rest of us. I was just forwarded a link that's a perfect example of that. It's a whitepaper written by my co-worker right her in Atlanta, fellow DE Doug Turnure. He wrote it in December 2006, and I only just now found out about it? Shame!!!
The whitepaper talks about the reasons why, as a developer, you'd want to have your apps deployed on Windows Vista. Doug really goes in depth on the benefits of various areas like security, memory, administration, management and more. Give it a read!
MSDN White Paper: The Advantages of Running Applications on Windows Vista