Sharpening JPG and Scanned JPG?

I mostly shoot raw doing capture and output sharpening in ACR.

Lately, I've been experimenting with JPG from my digital 20D and also getting scanned jpgs back from my elan film camera.

Realizing that this is a digital camera forum... a couple questions:
1) What kind of sharpening if any should I do to JPGs captured from my 20D
2) How bout scanned JPGS from my elan? No sharpening at all?

Depends. Are the scans sharpened already?

On the jpgs: Any "in camera" sharpening?

Sharpening as need based on the method of display. As the jpeg has already been sharpened, the quuestion becomes, how much? If more is needed, sharpen it up. If your going to print the pic sometimes experimenting a bit with sharpening is needed until you dial in the right amount. I know that for my printer I have to oversharpen a bit on the monitor else it looks soft.

I sharpen every single image. I find that every digital image needs a little.

- Oh I see, so when I shoot JPG, I can control the in camera sharpening from my 20D?

- As far as scanned images, how do I tell if they've been sharpened already? I just used CVS.

The reason I ask is that when I output sharpen, or even capture sharpen scanned jpgs, they look terrible.

Very probably the scans have been sharpened.
And probably, quite aggressively so.

Exactly..RAW bypasses all the menu settings on sharpening, contrast, saturation, etc..none of that is passed on to the raw file..shoot jpeg and your settings will be passed on to the final image so you can tailor your settings to give you the image you want.