Reasons to upgrade to Vista

I came across a list of reasons to upgrade to Windows Vista, click here for
the full list

All new networking stack
Many times the performance. Video

All new audio stack
Per-app audio, etc. Video 

New UI and graphics layer
Nicer UI with better video and audio integration.  Video

New search integration and file management
Tons of new things here. Video

New fonts and readability technology. Video

New kernel changes
Performance, security, and all that. Video

I wait for Mark to post something about 'get vista now'