What's the easiest way to move an object to the 3D cursor? The easiest way I know of is copying and pasting the coordinates in the right menu of the viewport. Is there an easier way to do it?
Select the object and then bring up the Snap-To menu with Shift+S and then choose “Selection to cursor”.
As mentioned by @JoanCharmant, Blender version 2.8+ allows you to right-click in the viewport to get a context menu that provides an easy way to get to the 'Snap' options instead of requiring the use of a keyboard shortcut. This option wasn't present at the time this answer was originally written.
$\begingroup$ Also in the main right-click context menu > Snap > Selection to cursor. For those that don't want to remember yet another keyboard shortcut. $\endgroup$ May 1, 2021 at 9:44
$\begingroup$ Good point @JoanCharmant - although when the answer was written, this was Blender versions prior to 2.79 and it was 'rightclick-select' rather than a context menu. It's very strange going back to the other user interface - I very much prefer the 2.8+ version now. $\endgroup$ May 1, 2021 at 14:08