Software for data recovery from USB's and digital cameras?

I'm after some free software for trying to get back some stuff I erased from my USB data stick and digital camera - does anyone know a site where I can find some stuff that isnt lame demo stuff that doesnt work??

You can use "Recover My Files" Software That is really best software for recovering.
You must know that don't copy any file to your USB Flash.

Try downloads.com

you can try smartdelete
http://www.smartundelete.com/