Pearl Jam will celebrate its 20th anniversary throughout 2011. The group—which kicked off its 20th anniversary bash at the Bridge School Benefit this fall—will mark the milestone with a series of special events. According to the group’s website, these events include: the release of Live on Ten Legs, spring reissues of Vs. and Vitalogy, the release of Cameron Crowe’s film Pearl Jam Twenty, a Pearl Jam Twenty book and soundtrack album and “a 20th anniversary destination weekend bash sometime in late summer.”