The JET Tokamak has now been operated in a wide variety of conditions. these include, 1) Plasma currents up to 5MA 2) Plasma bounded by limiters on the outer equatorial plane 3) Plasma bounded by the wall on the small major radius side of the torus 4) Plasma bounded by a magnetic separatrix 5) Additional heating at the ion cyclotron frequency, up to 6MW 6) Additional heating by ­ 70keV neutral beams (H or D) at up to 7MW 7) Combined heating with both techniques The results from these various modes of operation are described. These include ion temperatures up to 10keV and D-D neutron rates up to 2¥1015/sec. The results highlight the problem of confinement degradation. Several measures are planned to reduce or overcome this effect, however, even with confinement degradation it should be possible to reach conditions in which the thermonuclear output is equal to the power input (Q=1). This will require that the average plasma density is kept low (e.g. 2­3 1019 m­3). This should be possible due to the remarkable pumping action of carbon walls found in JET.