Tips for Mapping Dungeons?

[Breakstone]

I was thinking of mapping out a big ol' dungeon some time soon, but I've found I'm a bit lacking in the knowledge of exactly how. Sure, I could just grab a bunch of graph paper and a pencil and start going, but I was wondering:

Does anyone have any tips on mapping dungeons?

 

[Angcuru]

Have a REALLY REALLY REALLY REALLY good memory.

Just draw a quick sketch of the wall boundaries, lable the rooms "dragon in here" "chest over there" "big ol' trap 'o' doom right here", etc.