Anchorman Credit Question

if you go to the IMDB webpage of Anchorman, Vince Vaughn isn't credited in the movie.

http://www.imdb.com/name/nm0000681/

Vince Vaughn seems to have a more or less pivitol role in the movie, why the hell did they not care enough to put him in the credits?!

cameo role..

Dave Allen .... Homeless Man #2 (uncredited)
Jack Black .... Junkie (uncredited)
Missi Pyle .... (uncredited)
Tim Robbins .... (uncredited)
Stephen Root .... Vince Masters (uncredited)
Ben Stiller .... (uncredited)
Vince Vaughn .... Wes Mantooth (uncredited)

they are all uncredited

yeah, but Vince Vaughn didn't have a short cameo like all the others. He was just like any other important character. He was more or less the antagonist of the movie.

That's interesting...

this movie wasnt as good as i thought it would be

I thought Brick Tamland (Steve Carell from Bruce Almighty) pretty much made the movie. He had me in stitches whenever he opened his mouth.