Résume | We shall discuss or present recent progress in classifying some classes of irreducible unitary representations, like for example unitary duals of GL(n) over non-archimedean division algebras (Badulescu - Renard and Secherre) and unramified unitary duals of split classical groups. We shall pay special attention to unifying moments among these classifications. Also, we shall describe isolated unitary representations among these irreducible unitary representations, and discuss where from the unitarizability of these representations can be deduced. |