On your /friends feed, with your Friends/Noise avatars in the left column, hit Shift+1 for a full screen of people. Use Shift+1 to toggle back and forth.
You can drag people's avatars into the Friends/Noise boxes. (You can do this when your people are in the default column view also.)
Hit the Right Arrow key from your /friends feed to hide your Friends list. This is a super clean view. Then it's nice to use Shift+5 to toggle a grid and list view of the feed. Use the Left Arrow to show your friends list again.
If you're looking at your /friends feed, there's probably a bit of notification noise there ("Someone started following you"). Shift+0 will hide or show those.