nessMediaCenter 1.4 & nessViewer 3.4 for Mac available
Now the media center and media presentation can additionally be controlled by trackpad, (magic) mouse and mouse / scroll wheel.
The media center can be controlled by swiping up & down, clicking the left mouse button to select (or open / present) the current entry or moving up one level by clicking the right button.
The media presentation can be controlled by swiping right & left to select the next & previous media entry (or to jump forward & backward if just one movie is selected) or by clicking the right mouse button to show the presentation menu.
More of these (gesture) events - like rotating and zooming - will be implemented in the 64 bit versions.