On this year's panel of judges at Beck's Futures, alongside the usual respected curators and artists, sits Marianne Faithfull, one of the finest examples of the pop-and-art collision. Sure, she's an icon from the rock'n'roll Sixties, but look at her role in Sam Taylor-Wood's video installation Third Party (made in 1999 and on show at the Hayward's Sam Taylor-Wood exhibition, from 25 April). There Marianne sits, almost immobile, slowly drawing on a cigarette, while six other perspectives on a party scene are projected around the room. She looks as if she's seen it before. She has. Was Warhol's Factory like this the night after payday, I wonder?