So, Microsoft has just released a wave of (beta) products to download for MSDN and TechNet subscribers.
If you are looking to get your hands dirty on the latest and greatest SharePoint 2010, then this is the perfect time.
One of the coolest things in SharePoint ever to happen is the Integration of Office Web Apps right into SharePoint 2010!
You can now view/edit Office documents in the browser itself from SharePoint.
Here is a document library with some docs:

Clicking on the FY10 Sales Plan is going to take me to the Office Word Web App than asking me to open in Microsoft Word

And I can also edit right away!

And then save back the changes

Here is the PowerPoint Web Apps in SharePoint

One small catch – You can’t create new documents using the Office Web Apps.