Pan Am - Always First Class ID100's! And I remember meeting their JFK tenpin bowling team at a BBQ, all wearing T-shirts emblazoned with the Pan Am 'globe' logo, complete with the slogan "Marry me, and fly free!"
Silverjet - Only flew with them one LTN-EWR return trip, in late 2007. Excellent all round, no criticisms whatsoever; comfortable seating, nice people and great food & drinks service. As I enthused to Mrs Seafire over the Atlantic, "they'll never keep this standard of service up". They went bust the following May, I felt sorry for the employees.