What is a good acoustic song i can learn?

here are some of the bands i like Yellowcard, The Academy Is..., All Time Low, American Hi Fi, Bad Religon, Blink-182, Boxcar Racer, A Change Of Pace, Finch, Fort Minor, Crucial Unit, Goldfinger, Good Charlotte, Lagwagon, Linkin Park, Lit, MEST, Motion City Soundtrack, The Mister T Experience, Oasis, Relient K, Dashboard Confessional, The Starting Line, Story Of The Year, Strike Four, Sum 41, Taking Back Sunday, David Bowie, Weezer