I used to use Kirikae on iOS3 which allowed me to hit the home button twice, bringing up a list of all apps running. I could then quickly close the app with one touch. I don't like Apple's solution on 4.1 where I have to hold my finger on the app icon, then touch the little symbol to close it. I use my iphone while cycling and it is difficult to hit the small buttons. Kirikae worked perfectly. Is there anything out there that's similar?