We present here a summary of 7 years of observation at high energy with the SPI onboard the Integral spacecraft. SPI is a spectrometer working in the 20 keV -8 MeV energy range providing an unprecedented energy resolution over a large period of time. We will review the status of this instrument and we will demonstrate its quality and stability through key parameters: the energy resolution, gain calibration and the spectral response. SPI contributes to unveil the high energy sky thanks to its

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... e energy range, its wide field of view and a compromise between a moderate angular resolution (2.6°) and sensitivity to diffuse emissions. We discuss the current status of the annihilation radiation of the Galactic disk and show that it is well described by a bulge and a symmetric disk components. The spectroscopic properties of the instrument are well illustrated by the measurement of the energy shift of the 26 Al gamma-ray line along the Galactic plane. Thanks to its "hybrid" imaging characteristics, SPI is able to disentangle the diffuse emission of the Galactic ridge and the emission of point sources giving a coherent global picture of the high energy emission of our Galaxy. Concerning the emission of the compact objects, SPI confirms and demonstrates that a high energy tail can be present in their spectra, above the standard thermal Comptonisation component. This high energy emission and its variability are under study and will provide new tests to understand the mechanisms at work in these objects. The Extreme sky: Sampling the Universe above 10 keV -extremesky2009 Otranto (Lecce) Italy