Shea focuses on the various issues that come up when building something for the Wii resolution, screen size, input types, and more.

For example, check out the layout:

Ext.ns('Ext.ux.layout');
Ext.ux.layout.wii = Ext.extend(Ext.layout.FitLayout, {
    setItemSize : function(item, size){
        var viewSize = Ext.getBody().getViewSize();
        this.container.addClass('ux-layout-wii');
        item.addClass('ux-layout-wii-item');
        size.height = (viewSize.height-60);
        size.width = (viewSize.width-60);
        item.setSize(size);
    }
});
Ext.Container.LAYOUTS['wii'] = Ext.ux.layout.wii;

And then you can detect the Wii to set this layout:

Ext.isWii = navigator.userAgent.toLowerCase().indexOf("wii") > -1;
var layout = 'fit';
var title = 'Normal';
if (Ext.isWii) {
    layout = 'wii';
    title = 'Wii';
}