Guardian: The combined might of the US federal government and the world’s top engineers appear powerless to stem the raging Gulf of Mexico oil spill, but last night in New York and Los Angeles help was finally at hand: celebrities came rushing to the rescue. Larry King, who has made a career out of celebrating celebrity for celebrity’s sake, explained the purpose of his CNN telethon in characteristically eloquent fashion. “Remember bureaucracy is slow; you can hear about billions being donated …