A great line from the Duke, however he must have been watching the late eighties film "They Live" as there is a very similar line in the film.
We could originally only see one side of the Duke as he started life in sideways scrolling action. In Duke Nukem 2 we got see his back briefly as he was able to climb ladders, however it wasn't until Duke Nukem 3D that we really got see what he could do.
The first level was great with most of the action taking place inside a Cinema complex. Not sure what film was playing on the large screen, but the posters for Sister Act 3 were just wrong.