You can watch it here and other Obama videos:
Full video & transcript of
Barack Obama's Berlin Speech without ads or logo's.
Full video and transcript of with Barack Obama's Speech on Race without ads or logos:
The 'Yes we can song' by will.i.am
full original video and lyrics:
If you want to download the Berlin speech you can do that with Firefox and the DownloadHelper extension:
here and use DownloadHelper to download it. With this extension you can download flash (*.flv) videos from many sites like YouTube.