I don't really think I can call this an advertisement because I don't know that it will ever be one, but it is creative and the people who created it should consider a career in advertising. This newest video entitled "HP – Hit Print" is a second short film by the same people who submitted a spot for the D&AD Student Awards brief set by HP (below the newest spot).
And here is their first video entitled "HP – Invent". I can't even imagine how much paper and ink these must have used. Good thing HP sponsors them (I'm assuming).
If they aren't advertisements then maybe they are just meant to be viral videos (seems to be achieving at least that) displaying, rather creatively I might add, the things you can accomplish with your HP products. Now I sound like the commercial…