I'm glad the X-Box side of Microsoft can tell the gray marketing suits to get lost when it comes to setting names. Now if only the development platform team could do the same! I'm still lamenting the loss of "Avalon" and "Indigo". Every other business seems able to come up with great names and are not subject to copyright/trademark issues - surely Microsoft could spend a few more dollars on more imaginative, inspiring names?

XNA is a good "acronym" compared to "WPF" because the number of syllables is 3 compared to 5.