Here’s an alternative way of killing applications (even multiple). Instead of having the minus sign to kill the application, simply pick up the icon and drag it out of the switcher and drop. It kills it instantly. If you wish to kill more than one application, tap the applications you want to remove and drag and drop.
P.S. You may find this concept similar to MultiCleaner, however this allows multiple applications to be dragged out and killed at the same time.
© 2011 Joshua Tucker