I can do a lot of neat things with PS and graphics, but I can't make a seamless background tile! lol Sheesh.

Can someone tell me where I might find a tutorial that shows how to make a seamless bg image using a photo or textures other than a noise filter?

I've tried quick tile, and don't like the end result because it ends up looking like 1st generation "oh my god!" burn your retinas backgrounds. Have tried the offset option in PS and I just end up with those seams, that boxy look. Also tried the pattern maker and it's even worse.

Any suggestions??