Top Billing?

Just watched Die Hard 4.0 (Will there be a 4.1? Will it have networking and workgroup support?) on DVD. Not seen it before. It is a big, dumb, action movie with some great lines and even greater explosions. For me the best bit was the credits, where some up and coming actor was billed as playing the part of "Nearby Agent". I don't think that's very helpful as a description. Lots of agents were near to John McClane at one time or another in the movie, but not usually for very long....