I see that as being a great opportunity for customer referrals. So many people have a gmail account. It'd be cool, from the business' standpoint, to see if your customers are connected through something as simple as email if they allow an app to access sender information.
It allows you to turn videos into 'Choose Your Own Adventure' like guides.
You can map where the user goes next based on the choices they make.
It seems like it'd be a great tool for entertainment or educational purposes.
The only issue I found was that the videos couldn't be captioned, so it's not ideal for accessibility.