If you are in the Game Developement arena and use SketchUp to create assets then Unity 4.2 will be a welcome addition to your arsenal. This latest release has a ton of new improvements to an already very strong toolset.
But Unity is not just geared around gaming it is a very competent visualization application that breathe life into an project.
Download UnityCurrently we have seen that Unity is synonymous with Game Development but recently there has being a surge in using for ArchViz
Abyss Studios Ltd., showcased how competent Unity is for ArchViz presentation in the video below.
Unity provides a plethora of options for presentations and it's website embedding means you can share with your clients presentation as and when you need without leaving the office