Angel Heart (1987)
Ingredients 1/2 oz Light Rum 1/2 oz Spiced Rum 1 dash Lime Juice 1 dash Coca Cola
Directions Shake with ice and strain into shot glass. Best served in a Shot Glass.
Since Angel Heart is a story involving religion and the battle of Good vs Bad, Johnny Favourite may have been used as a Biblical name to add effect on the storyboard.
However there is a big difference between the Biblical Johnny Favourite/John The Apostle and the film's Johnny Favourite, as the latter is certainly one who did not associate generally with religion and specifically with Christianity, but more so to black magic and satanic deals to reach stardom.
1 - source, Wikipedia.