I have accidently done it before... holding the home key brings up pop up of 6 most recent used apps. If you used it to pop out of another app that normally closes when you hit the back button, that app will stay running so you can pop back in without reading. If you hit the back button with that same app, that app will close and go to previous app. That app will have to reload when re-ran. Examples are Fox news app. It exits when you hit he back button. The official TV guide app will ask you if you want to exit when hitting back if you weren't using an app before. Or, if you do a quick home, will keep running .. Eh, so thought I would share. I was going to ask how to quickly switch between apps, then remembered about the pop up I would unintentionally get on occasion. Is there any other method to swap between running apps quickly without having to go home and hit he icon or scroll thru list? Posted from my Evo. Sorry for any mistakes.