At the end of its second season, "Monday Report" was the highest rated arts and entertainment show on the CBC. Mercer has had a who's who from the world of Canadian entertainment and politics appear as guests on his show. Ex-Prime Minister Paul Martin gave him a private tour of 24 Sussex Drive and former New Democratic Party leader Ed Broadbent made snow angels with Mercer on Parliament Hill. Other prominent guests were NDP leader Jack Layton (who was Mercer's own MP); Conservative Party leader Stephen Harper (former Prime Minister); Green Party leader Elizabeth May; then-Conservative MP Belinda Stronach; Conservative MP Peter MacKay; former Newfoundland and Labrador Premier Danny Williams; Olympic gold medallist Kyle Shewfelt; author Pierre Berton; recording artists Jann Arden, Bif Naked, Rush bassist Geddy Lee and drummer and lyricist Neil Peart, and Sarah McLachlan; publishing mogul Conrad Black; and former Prime Minister Jean Chrétien. When Mercer hosted a relief benefit concert for the victims of the 2004 Indian Ocean tsunami at the Pengrowth Saddledome in Calgary, musical guests Barenaked Ladies appeared in a segment Mercer shot backstage completely naked.