If you were in London last night looking out over the river Thames around 8pm, you might have seen something incredible. Dr. Manhattan took a break from promoting his new movie, to rise out of the water and hover, before dissolving into a frothy spray.

It was all part of Pramount Pictures ever bigger UK Watchmen promotion. They pulled it off using the world's biggest water screen projector, moored out in the middle of the river, producing a projected Dr. Manhattan nearly 72 feet tall. Below we have video footage and images from the event. Take a look at what it might look like, if the superman existed… and were British.