Most of the websites listed here provide a viewing experience much nicer than the ECB player, as well as tons of other footage. Surrey even create their own video highlights.
Use the small comprehensive ECB player for clubs that don't feature any match highlights on their websites (yet).
Links to the single videos, player has a download button
ECB player embedded in the sidebar, Northants matches only
at Youtube: Somerset CCC and peacocksmedia
Custom videos with cool pre-match stuff
Small embedded player
Registration needed to access archives in the large player.
ECB player embedded, Warwickshire matches only
ECB player embedded, Worcestershire matches only
Nothing there yet, though.