'Hook' is perhaps the best Steven Spielberg film made in 1991 starring Robin Williams as a grown-up Peter Pan. That's the only accolade likely to come its way. But it's beloved of this clique of oddball comics, who are performing the picture in its entirety – part panto, part performance art, all fun. Dress up, pick a side: pirates vs lost boys. In aid of Great Ormond Street Hospital.