Switcher is an Expose clone for Windows Vista. You may remember I recommended the beta version just a few weeks ago, new in the final version are a few stability fixes and reportedly some performance improvements as well. If you have no idea what Switcher or Expose are and what they can do for you, check out this post.
I have yet to try this updated version but I still wanted to bring the update to you ASAP considering I have endorsed it in the past as the best implementation of Expose-like functionality for Vista. Forget about Flip3D, and ease your use of Alt+Tab with this smart application switcher.