Please reply with any good resources you know of - and enjoy these!
(I'm not associated with any of these sites)
stock.xchng - the leading free stock photography site - Free Stock images. Highly recommended.
Incompetech - free, royalty free music.
Ghost Notes - Music, member of this forum. Top notch stuff.
Royalty Free Music, Free Sound Effects, Free Music Loops - Public domain sound effects.
Stock Footage & Video Backgrounds from A Luna Blue - A Luna Blue Footage: Sign up for the newsletter, get a free download each month.
Detonation Films - Footage: Free explosions, muzzle flare, etc.
Internet Archive: Moving Image Archive - Internet Archive Footage: Awesome resource. Many, many public domain videos, many at larger resolutions. Try a search for "Stock" to access hundreds of royalty free clips. Bookmark it now, seriously.
Free Royalty Free Stock Footage Clips - Footage Firm Stock Footage: Offers multiple free high quality clips. If you haven't already downloaded these, I highly recommend adding them to your library.
Artbeats - Royalty Free Stock Footage For the Video Professional - Artbeats Footage: Register for the newsletter, get a free clip. Order their free demo reel while you're there - it's really enjoyable and includes tutorials.
EDIT: titles and clarity.