Acer now stepping into the smartphone arena used Mobile World Congress 2009 to showcase their new Windows Mobile UI overlay the Acer Shell UI.
Acer offers a virtual office space with the Acer Shell UI; a widget based homescreen with a rolodex a clock picture frames ect, with each desktop item being represented by a widget and thus allowing you to move around your virtual office.
We have a video below of the Acer Shell UI in action, although the refection in the homescreen does tend to overshadow the actual UI so it is a bit difficult to see in any clarity.