Question: Mo McCackie was a character in which 1934 Australian comedy musical film?

Context paragraphs:
Terry Scanlon: Terry Scanlon (5 July 1913 – 21 August 1996) was an Australian comedian and pantomime artist.  He was one of Australia’s top comedians; he worked with some of the early greats of Australian comedy, including Roy Rene and George Wallace.  In the 1930s, however, he was one of the vanguard to modernise comedy out of baggy suits, funny face make up and slapstick into the more modern stand up style comedian - in a tailored suit, the only prop a cigarette in hand, delivering gags.  His role in the evolution of Australian comedy was acknowledged in a tribute by Joe Martin when he was honoured as a life member of the “ECHINDAS” by his peers years later.

1934 Australian Championships: The 1934 Australian Championships was a tennis tournament that took place on outdoor Grass courts at the White City Tennis Club, Sydney, Australia from 18 January to 27 January.  It was the 27th edition of the Australian Championships (now known as the Australian Open), the 7th held in Sydney, and the first Grand Slam tournament of the year.  The singles titles were won by British Fred Perry and Australian Joan Hartigan Bathurst.

Simon Dodd: Simon Dodd (born 7 June 1959) is an Australian comedy writer, author, playwright and feature writer.  He is the recipient of ten Australian Writers' Guild AWGIE Awards as part of the writing team behind such successful TV series as "Good News Week" and "The Glass House".  His list of credits includes popular Australian comedy TV shows from the late 1980s until today.  He also wrote for Logies host Andrew Denton in 1999 and 2000.  In 2014, he produced and directed his Absurdist comedy stage-play "Plaything" at the Factory Theatre for the Sydney Comedy Festival, garnering a number of positive reviews.

Roy Rene: Roy Rene (15 February 189122 November 1954), born Harry van der Sluys, was an Australian comedian and vaudevillian.  As the bawdy character Mo McCackie, Rene was one of the most well-known and successful Australian comedians of the 20th century.

The Seat Filler: The Seat Filler is an American romantic comedy musical film produced by the Company Production of Magnolia Home Entertainment, Seat Filler Productions, Shake Martin Films and Strange Fruit Films, which released in 2004.  It stars Kelly Rowland, Duane Martin, Mel B, Kyla Pratt and Shemar Moore.  The movie received mainly average reviews.  The film is also recognized as Duane Martin's first (and to date, only) appearance in a musical film and Kelly Rowland's most successful film in a leading role performance.

Strike Me Lucky: Strike Me Lucky is a 1934 Australian comedy musical film starring popular stage comic Roy Rene in his first and only film.  It was the fourth feature film from Cinesound Productions but proved a box office disappointment; director Ken G. Hall says it was the only one of his features not to go into profit within a few years of release, although he says it eventually went into the black.

Blue Mountain Melody: Blue Mountain Melody (also seen as "The Blue Mountains Melody") is a 1934 Australian musical comedy.  It was a rare local musical produced by J.C. Williamson Ltd.  The firm commissioned it following the success of "Collits' Inn".

1934 Australian Grand Prix: The 1934 Australian Grand Prix was a motor race held at the Phillip Island circuit in Victoria, Australia on 19 March 1934.  The 200 mile race, which was organised by the Light Car Club of Australia, was the seventh Australian Grand Prix.  Contested as a handicap race, it was won by Bob Lea-Wright, driving a Singer 9 Le Mans.

Music in the Air (film): Music in the Air is a 1934 American romantic comedy musical film based on Jerome Kern and Oscar Hammerstein II's Broadway musical of the same name.  It was part of the popular subgenre of operetta films made during the era.

Cinesound Varieties: Cinesound Varieties is a 1934 Australian variety short film from director Ken G. Hall made to go out on a double-bill with the full-length feature, "The Silence of Dean Maitland" (1934).  Only 18 minutes of the film survive today.

Supporting paragraphs: Strike Me Lucky Roy Rene
Answer: Strike Me Lucky