We're all eagerly waiting for Grand Theft Auto V to launch in September, and Rockstar are easing our pain somewhat by giving us the following gameplay demonstration. It kicks off at 3pm BST, and you can watch here on Gamereactor (assuming the weight of the internet doesn't crash the stream). As soon as the content is available we'll upload it here, so you can watch it again and again and again, if you so wish.
Update
It appears as if the weight of the internet has overloaded Rockstar's servers. On the bright side, we're uploading the gameplay now and will be able to share it with you in just a few minutes.