Eleven years after their first gig, eight years after their first album, five years after the mid-nineties madness started to subside, there's no mystery why millions still love Oasis: honesty. The men are honest, the music is honest. We trust Oasis. That's why one Saturday morning this winter, when 120,000 tickets went on sale for the band's two summer shows at Finsbury Park, Noel Gallagher was able to take a call from his manager by lunchtime to say that all the tickets had gone.