I happened across this yesterday on one of my late night internet tour stops. It's called Skitch and it is a fantastic image capturing application. I know it works on Mac but am not sure about PC-- could be another reason for the latter folks to make the call to get out of Egypt. Anyway, if you are a creative person who likes to capture ideas, images, photos, etc. and share them with friends-- this is for you. Best part = It's Free!
and yes-- that's my circle and handwriting added to the image for your benefit.