Leapin' Lizard!!

This darn lizard has been living on our roof for months now! He keeps revealing himself when we get visitors. This picture doesn't show how vibrantly orange he is and how large he is. It is very fast and he hangs out at the front entry. I have never seen a lizard of this size down here other than someones pet, but he gives people a scare when they knock at the front door. Anyone have any idea what kind of reptile this is? I hope it isn't man eating or poisonous!