1s and 0s, respectively.
Numerical data with commas.
Post your favorite chart to Instagram.
Take a snapshot of the entire screen, including your taskbar.
Create a live-link to a cell address, which Excel treats like a picture.
Embed a webcam into your chart.
Being able to easily ask and answer questions about your work.
Allowing errors to easily propagate so you can find and correct them.
Keeping your spreadsheet password protected for security reasons.
Being able to find calculation bottlenecks and correcting them.
The person you might pass your work to; and yourself, perhaps six months from now.
Your boss, who is interested in the results; and your co-workers, who are jealous of your Excel skills.
You mom and dad, who wish you'd call them more.
Your supervisor and your supervisor's supervisor, who are expecting big things from you!