Mario Rosenstock is an Irish comedian, actor, and impressionist, best known for his satirical radio and television sketches, particularly his long-running radio show segment Gift Grub on the Ian Dempsey Breakfast Show on Today FM. His ability to mimic Irish and international celebrities, sports figures, and politicians with sharp wit and humour has made him a household name in Ireland. Gift Grub is a series of comedic sketches that parody current events, sports, and politics. Rosenstock’s impressions are at the heart of the segment, where he mimics various famous personalities, including Irish politicians (like Bertie Ahern, Micheál Martin, and Leo Varadkar), athletes (such as Roy Keane), and international figures.

Rosenstock has taken his Gift Grub show on the road with Gift Grub Live, a live performance version of the popular radio skit. The live shows blend stand-up comedy, multimedia presentations, and live impressions, often featuring elaborate sketches that parody political debates, celebrity interviews, and sporting events. The live shows allow Rosenstock to expand on the short sketches typically heard on the radio, adding props, costumes, and audience interaction, making the experience even more engaging for fans.

Mario Rosenstock’s Gift Grub sketches have become a cultural staple in Ireland. His ability to poke fun at the country’s politicians, media personalities, and athletes, while maintaining a good-natured approach, has made him beloved by fans across generations. His live shows, including Gift Grub Live, bring his famous impressions to life in an interactive and entertaining format, drawing large crowds wherever they are performed.