I think there are quite some pepole wanting AdSense, including me (I think AdSense is a LOT better than other ads).
The Widget I primarily thought about is:
There are others that can be found by searching the net for something like "wordpress adsense widget" or "wordpress adsense plugin".
I did not check any of these yet, because I do not have a local WordPress installation with widgets.
If this has already been suggested, sorry, I tried to search. If it would be dangerous - dont install it. My blog is mor important to me than ads on it ;-)
PS: Did not submit this via feedback because I want to hear user feedback first before hasseling the admins with it.