We've come to expect the odd and unusual—but amusingly odd and unsual—from Weezer (MySpace). So when we heard that the band's tour in support of their latest self-titled album would be a hootenanny, our curiosity was piqued. Weezer has invited certain fans to bring their instruments (be they oboes, washboards, whatever) to jam with the band. And everyone is invited to bring their clappin' hands and voices. The band is taking a party approach......