Vojta Dyk (or more formally, Vojtěch Dyk) is handsome and talented Czech stage and film actor, unusually versatile singer and Czech dubbing voice of Benedict Cumberbatch among other things.
http://www.imdb.com/name/nm2476437/

 

Vojtěch Dyk and Eva Pilarová, singing “Je nebezpečné dotýkat se hvězd” by Jiří Šlitr