Switchy Cydia tweak doubles up the size of the app switcher and adds a lot of useful features.
Check the video review after the break.
Switchy expands the task switcher to include two rows of icons. It adds Artist/Album information and volume slider to the Now Playing Area. Clear Apps button that kills all the opened apps is added into a new page dedicated to settings. From the settings page you can adjust the brightness and access the Settings app.
Switchy jailbreak tweak is compatible with iPhone and iPod Touch and requires iOS 5 or higher. It’s available in Cydia under the BigBoss repo for $1.00.