1. Gift Grub is a series of comic sketches, impersonations and parodies that have featured Mario Rosenstock assuming the personae of Bertie Ahern, Ronan Keating, Colin Farrell and Roy Keane amongst many others; he provides the manic voice of Right Price Tiles radio spokesperson "Daft Dave".
Mario Rosenstock performed an impersonation of Jose Mourinho in a parody of a song from the musical Joseph and the Amazing Technicolor Dreamcoat.
Mourinho had heard the song and enjoyed the impersonation so much he asked Mario Rosenstock to perform a private show for him and the Chelsea squad.
Mario Rosenstock later released, with Mourinho's blessing, a single version of "Jose and his Amazing Technicolor Overcoat".
Mario Rosenstock released another song on the internet with a parody of Mourinho in an interview then breaking into song.
In 2005, Mario Rosenstock achieved the Christmas number one single in the Irish music Charts, with a parody of Will Young's song Leave Right Now.
Between December 2007 and May 2009, Mario Rosenstock worked on a puppet comedy series entitled Special 1 TV, which was presented as a parody weekly football talk show hosted by "Jose Mourinho".
In November 2012 his new show called The Mario Rosenstock Show started on RTE2.
Mario Rosenstock's grandfather George was a doctor and writer from Schleswig-Holstein, Germany.
Mario Rosenstock never spoke German again after the war out of shame.
Mario Rosenstock's grandmother was a nurse from Athenry, County Galway.