Question: Is there some utility or Service that will allow me to screen capture from a window or rubber band **directly** into Keynote **without first storing the document in a file**? 

I would like to do this with the "Services" command, if possible.

One way to do this would be to make the screen shot happen, then put the screen shot on the pasteboard, then do a paste command. But I am not familiar with the approach. Thanks!

Answer: 
`Cmd`+`Shift`+`Ctrl`+`4` will give you a magical pointer; you click-drag rectangle; the rectangle will then be screenshotted directly to the clipboard; switch to keynote and do `Cmd`+`v` to paste. rinse and repeat.
As posted in [this question](https://superuser.com/questions/15646/underused-mac-os-x-gui-features), you have [(at least)](http://guides.macrumors.com/Taking_Screenshots_in_Mac_OS_X) the following screen capture options:

* Whole screen: Cmd+Shift+3
* Select a specific area with mouse: Cmd+Shift+4
* Directly to clipboard: Cmd+Ctrl+Shift+3
* with Cmd+Shift+4, you can also select one window by tapping the space bar

The screen captures are saved to the desktop in png, unless of course you choose directly to clipboard. [Here's](http://snowleopardtips.net/tips/everything-you-need-to-know-about-screen-captures.html) a guide to changing the formats of the screen captures (pdf, jpg and so on.)