Gilbert & George: Major Exhibition
Tate Modern, SE1
The largest retrospective exhibition ever to be held at Tate Modern, it fills 18 rooms with charcoal-on-paper "sculptures", photographs, excrement and blood. Throughout, the figures of Gilbert and George loom, revelling in gleeful squalor while wrestling with themes of prejudice, religious fundamentalism and violence. Until 7 May (020 7887 888).