Care to share what type of spreadsheet you were working on? Personal or business?
A few years ago, I found out by accident that they have a Microsoft Excel World Championship, aka "Excel Olympics." It's far beyond my skill level but quite an interesting concept.
I do similar things to you when trying to focus. Turn off phones, turn off email, close my internet browser. A big one is notifying co-workers that I'll be focusing on an important project and request not to be disturbed.
It was a business thing so I can't really. I guess I'd not share much if it weas personal either. What I am able to say is that there's colours and charts and numbers that change when other numbers change and some other cool stuff too.
Excel Olympics? I'd suck at that...but not as sucky as that Australian break dancer from the last Olympics.