Given that Amy Winehouse's "Rehab" has become resolutely unfunny over the past month (even before she canceled), the title of "band with that one hit song that everyone loves" at ACL has fallen squarely on the shoulders of Sweden's Peter, Bjorn, and John. The group have been plugging away at their charming blend of pop, rock, and indie since 1999, and are anything but an overnight sensation. Their breakthrough hit "Young Folks" is actually......