I heard of WidSets (https://www.widsets.com/index) from the treo central TreoCast.  I thought it was a great idea.  I understand why they chose Java, but I am so frustrated with J2ME support especially on SmartPhones!  I thought it would be so cool to create a product like this for Windows Mobile!

Then I ran across this:

http://on10.net/Blogs/laura/vista-gadgets-running-on-windows-mobile/

What a great idea.  Too bad that this does not support Windows XP, but I want to implement a gadget or widget like Yahoo! Widgets (http://widgets.yahoo.com/) and have it work on Windows (XP, Vista, Mobile, XBOX), WII, Mac OS and Linux.  Why not???  Miguel???  Mono???  Help me!!!!