I have really dry skin, so just putting aloe vera gel as a moisturizer is not enough, and I can't only use oil, because my skin gets all weird from the lack of humectants (things that draw water from the air into the skin). So what I do is I put a layer of aloe vera gel on, and then a layer of coconut oil to seal it in. This is very moisturizing.
As a lot also have mentioned I also use it in my hair, but only if I know that I can keep my hair in a bun, because it makes my hair too "crunchy".
I also second using it for sunburns - fridge cooled aloe vera gel is fantastic on sunburns.