American illusionist David Blaine has performed some crazy stunts. He's been buried alive and frozen in a block of ice. He once spent 35 hours standing atop a wind-blasted pillar, he stayed underwater for a week, and he lived in a box for 44 days without food or other nutrients. His latest challenge is to hang upside down from a thin wire for three days, five storeys above the streets of New York. It's a test of nerve, endurance and dignity - and it seems awfully familiar. Perhaps Mr Blaine was inspired by the UK's Herbert Crossman, who earlier this week dangled by his feet from a crane in Trafalgar Square. The appropriately named Mr Crossman, a 60-year-old security company boss, was protesting against the country's tax regime. The public, he claimed, are 'haemorrhaging money' - and to illustrate his point, cash fell out of his pockets, though into strategically placed buckets below, not into the needy hands of his fellow beleaguered taxpayers.