Microsoft Excel, since the dawn of computer times it has been the undisputed champion of spreadsheets. It still amazes me that there has been no competitor to unseat Microsoft in a piece of software that at its core is less complex than your average PC game, but it’s still the king. Here’s the rub, while you might think you’re an Excel guru, you might not be the spreadsheet wizard you think you are.
If you’ve spent years using Excel and think you’re a spreadsheet genius, watch this video and you might find-out that you still have a lot to learn.

I use spreadsheets daily for light duty stuff and maybe a couple times a month for more heavy duty tasks. There were a few things in that video that I was not aware of at all, but then I’m no pro at spreadsheets and still consider myself a novice (Especially after watching that video). :p