No real arguments here that Five Weeks in a Balloon is infantile, poorly directed and scripted, wasteful of its acting talents, and a general wash in terms of meaningful content. That is all very accurate, yet the film is fun and entertaining. The Jules Verne novel does come to life in stunning color, a cast of notables throughout with the likes of Billy Gilbert, Henry Daniell(both of these men woefully out of place playing Arabs - but still fun to see), beautiful Barbara Eden(not doing much more than looking lovely),Herbert Marshall in one of his last screen roles,the stunning Barbara Luna in a loincloth most of the time, madly overacting Red Buttons, every affable and witty Peter Lorre playing a pseudo-villain, Fabian being Fabian, and the two key and most fun performances to Cedric Harwicke as the leader of the expedition and Richard Hayden as a rival scientist doubting all his finding but eventually coming round. Basically Hayden is playing the same role he played in Lost World, another Irwin Allen picture, when Claude Rains played the scientific renegade out to prove the world wrong. And that is part of the main problem with this film, the script is devoid of any depth, full of flat characterizations, unfunny lines meant to be taken as humour, and animals obviously trained living in the middle of the untamed jungle forest. All are trademarks of Allen's work - just watch Lost in Space sometime. Yet, as I said, it is fun. It's almost camp in a way and never tries taking itself seriously and that helps the sell work for me at least. As soon as you sit down to watch the movie, this incredibly melodic tune sung by the Brothers Four resounds over and over again and I tell you something true - lingers on with you - days later. You know by that thematic tune that you are not about to sit down to Heart of Darkness or The Lion in Winter - you are watching something that is meant to be fun. Five Weeks in a Balloon is just that. - Flawed and Fun.