I came across this handy tool today from xda-dev

To those of you who dont know what dynamo is… its an animated task
switcher that allows you to pull up a picture of all open tasks and
switch to that picture with your finger or close that task. Kinda like
with Vista on windows desktop, except its VERY finger friendly. You can assign it to a hardware button or FTouch gesture

To install this… youll need some older framework… go to the link
below and download.

Microsot .NET Framework 1.0 sp3 (microsoft)
Microsot .NET Framework 1.0 sp3 CAB (megaupload)
Microsot .NET Framework 1.0 sp3 CAB (rapidshare)
Dynamo2