NomNom is an application for downloading and streaming media from YouTube
and other similar media websites that require flash to view the media content.
See also the gallery.
How it works
NomNom works as a relay for other applications,
such as media players, passing parsed media stream URLs to them.
Media streaming or downloading can be started by dropping an URL onto
the application window. This can could be done,
for example, with a web browser.
More than a downloader
NomNom currently supports either streaming and downloading. It can also
display YouTube feeds. NomNom is intended to be a cross-platform
application with the focus on Unix-like systems. See
here
for the prerequisites.