Round 7 - Judge Bobacus

...because neither are required for a healthy heart . -- Vitenka
...because neither are required for backpacking around the Cavendish Labs . -- DouglasReay
...because neither have been caught drinking cappuccino in California with someone from Mill Road . -- MikeJeggo
...because both are imaginary . -- AlexChurchill
...because both appear in Monty Python and the Quest for the Holy Grail . -- PeterTaylor
...because both are spelt correctly by Americans . -- Whistway