Using a Views block to show information about the current node and its author

I've searched through the Views documentation, and while I understand how URL arguments work with Page Views, I can't seem to find a way to create a Block View that shows information about the current node.

In effect, I want to set up a block in the right column that will show information about the node that's currently being displayed, and its author.

I can't seem to find a way to create a Block View that will use the current node's UID to display the relevant information.

Am I overlooking something, or is this simply not possible with Block Views?

- Osfer