Hitchhiker's Guide To The Galaxy, The Easter Egg - Main Menu - Internal Number 42?

If you put the dvd into a computer and look at the internal menu structure in some sort of dvd ripping tool (Dvd Shrink works well for this) you will notice that the video for the main menu is Menu 42 on the first VTS. 42 is of course, in this famous series the answer to life, the universe and everything. Just a fun little hidden egg.