Task Switcher is a handy app for the Android platform that allows you to switch between tasks on the fly. While the Android platform already allows you to do this, it only offers the ability to switch to the last six applications you've opened. Task Switcher offers a little bit more.
Task Switcher has a toggle button for you to determine if you want it to only show you the apps that are currently running or the most recent apps. This can be really handy if you're switching back and forth between running apps. You can even set shortcut keys, similar to how the home button works for the native switcher process.
The display is easy to navigate and looks very similar to the Android Market spotlight area. Once you select what you want to load, depending on the delay you've set, the new app will launch. This is a handy utility that allows you a little bit more customization then the built in version does, so definitely check it out if you're looking for an alternative.