Andy describes a mega menu and explains why you should consider using it.
A mega menu is like a fly out menu, so when you mouse over something you get a menu that comes down. But a mega menu is actually a version of that, its really large and has a lot of different items spaced out in a way that makes it easy to read. The reason that we want to use mega menus is that typically in a circumstance that we have deep content and we want people to be able to get to it quickly, or we have a website that people come back to a lot. What they want to be able to do is understand that they are able to go to the item they want and quickly find something down below and they keep that convention in their head that they are able to do that on a regular basis. So mega menus can be really useful in certain circumstances and for certain websites, so you should definitely consider them.