I am not precisely sure why, but an Italian artist named Damiano Colacito recently created an art installation that consists of the Doomguy's HUD face projected onto a building. I guess this is art for some reason. Here's Colacito describing why he decided to use Doom for this project:
As you know, Doom is one of the first FPS and it is one of the first games in which the HUD - which was located under the main game area - featured an evolving portrait of the protagonist, Flynn Taggart, controlled by the player. The visualization of the HUD was justified by the translation of the data that Flynn was visualizing in his helmet - or in Gordon Freeman's miniature in Half-Life. That animated face functioned as a live recording of something that could not have been possibly represented otherwise: it was the evidence of the concrete existence of a man in such inhospitable gamespace. That small animation showed Taggart's cautiousness and vigor, joy and desperation. In a game of reference - between the subject of representation and the represented object - one could easily understand that the live recording made possible a complete identification between the avatar and the player on the other side of the screen.
Oh get off it, you just thought it would be cool to project a giant Doomguy head onto a wall.