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The Standard Model (SM) with a single Higgs boson is the simplest scenario to give masses to the weak bosons to explain the electroweak symmetry breaking, yet nature has always given us more puzzles to ruin our naive wishes. 3 fermion families, the beautifully minimal SU(5) GUT turned out to be not what nature had in mind, to name a few. The Higgs sector may well also hold more rich secrets than the minimal SM would suggest, and additional Higgs doublets are well known extensions of the SM which are just as likely. In the Minimal Super-Symmetric Model (MSSM), the Higgs sector is necessarily extended to two doublets with the lightest neutral Higgs h h^0^ behaving very similar to the SM Higgs, while there are additional heavy neutral Higgs HH^0^,A A^0^ and charged H^{+-}^. The ratio of u/d vacuum polarization values is denoted as tan(beta) in the MSSM and the experimental constraints clearly favor a largish tan(beta)
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