When I was typing this question I already found the answer, so I thought I might as well post it here in case someone else finds this useful. On my old MacBook there was the F11 key that I could use to show my desktop (the same thing as the "Desktop" hot corner setting). On the newer MacBooks though, this key is gone, and the only dedicated keys I can find are for Exposé and Dashboard. The F5 key on my MacBook Air doesn't seem to do anything though, and there isn't an icon on it. So I wanted to remap this key to show my desktop. I often find it easier to hit a key than to mouse to a corner. I installed KeyRemap4MacBook but I can't find an option to add the "Show Desktop" function. There is an option to add custom key bindings though, so I started looking for some key combination that could simulate this. And guess what: Cmd + F3. Doing After all those years, I still find out something new. Anyways, since I was already half way there, I wanted to bind it to F5. One key is still less than two. And here's how: 1. Open up the KeyRemap4MacBook custom bind-config-file, as explained here. 2. Then add the following: Code: <?xml version="1.0"?> <root> <list> <item> <name>F5 to Show Desktop</name> <identifier>private.f5_to_show_Desktop</identifier> <autogen>--KeyToKey-- KeyCode::F5, KeyCode::EXPOSE_ALL, ModifierFlag::COMMAND_L</autogen> </item> </list> </root> Then reload the XML in the KeyRemap4MacBook Change Key tab, check the checkbox for your new setting, and F5 now shows your desktop .