Switching between Blackberry applications

PC users may be familiar with the 'Alt+Tab' hotkey to switch between running programmes, if you didn't well you've just learnt something! So, switching between applications on a Blackberry can be achieved by pressing the 'Alt+Esc' keys; the Esc key is the key to the right of the navi-ball. When a horizontal list of apps appears, release the 'Esc' key and scroll left/right using the navi-ball to select the app you want, releasing the 'Alt' key with launch the app you're after.