I've used Camptasia which has a powerpoint add on so you can work in powerpoint and save it for camptasia as a movie edditor so you can add all the moving edditting items.  It has a screen caprture program I use independently to capture movies that I can't download any other way. it does work in the background I was using it to capture google earth as it flies to a to alocation I'm trying to use it to make an animated bat and your seein gfrom his eyes as he goes to bat caves around the country and then a presentation on location type formation species of bats in the cave etc. captasia does have a light pointer to point at objects dont' know about writing though probably away to do it.

If you talk to the Animals, they will talk with you. And you will know each other. If you do not talk to them, you will not know them. And what you do not know you will fear, What one fears One destroys." Chief Dan George-Tsleil-Waututh Nation Next time your scared by a bat remember 8 million have died from White Nose Syndrome 1 bat=5 lbs bugs/year=1-2 million mosquitoes/year 1 small bat house = 250-700 bats you do the math. West Nile Virus infected 5287 people killed 243 last year is your home protected? http://fewerr.org/Pictures/WNV_Bat_Mosquito_yellow%202.pdf

http://www.fewerr.org/PDF/bookfly1.pdf