Quick, clean, and to the point

Extend the selection to the last cell right

Windows shortcut 
Mac shortcut 

If the active cell is empty, Excel will extend the selection to the first non-empty cell to the right. If the active cell is non-empty, Excel will extend the selection on the last non-empty cell to the right. On a Mac, the command key (⌘) can be used instead of the control key.

Related videos

The videos below demonstrate this shortcut.
This video provides a brief introduction to structured references. Structured references are an easy way to refer to tables in Excel formulas.
In this video, we'll look at how to use conditional formatting to shade every other row in a table. This is sometimes called "zebra striping".
Once you have one pivot table set up, you might want to see a different view of the same data. In this video, I'll show you how to base one pivot table on another.
In this video, we'll take a quick look at the information provided by the status bar. The status bar provides real-time data about currently selected cells and can give you a lot of useful information.
In this video, learn how to use VLOOKUP to build a simple form to extract employee information from a table, in about 3 minutes. VLOOKUP is a key Excel function.