How to watch the videos full screen and download to your computer:
To play the videos, click the play arrow at the bottom left of video. To watch full screen, click the Google icon in the bottom right of each video, click 'Go to Google Video', then click the 'expanding square' icon or 'full screen' from the drop down arrow, both on the bottom right of the video image.
How to download the video (for slow connections)
To download the movie, click through to google, as for full screen play. On the right menu, select a download type and click download.