Show/Hide Keyboard on the Samsung Galaxy S2

I used to have a HTC Magic, and I recently switched to a Samsung Galaxy S2. One thing I miss is the ability to Show/hide the keyboard, on the HTC Magic, a long press of the menu key toggled the keyboard's visibility, is there a way to achieve the same thing on the Galaxy S2? (I tried several long presses and various swype up or down gestures to no avail...) Thanks!