Batman movies are big business in Hollywood, obviously, and as a result, just about everyone and their uncle wants to get in on the action.
That's why, in addition to attracting A-list talent to lead roles across the Caped Crusader's various big-screen iterations, Batman on film has also seen celebrities begging their way into distracting cameo roles, and over-qualified actors simply being happy to show up for a single, solitary scene.
From the lows of the Joel Schumacher movies to the highs of the Christopher Nolan years, Batman has never been a stranger to shoe-horning weird and wonderful cameos into the mix, from the cringe-worthy to the awesome.
These 10 cameos, by far the most peculiar and unexpected of the lot, promptly obliterated the audience's immersion - both for better and for worse, for awesome and awful.
And with Matt Reeves' The Batman set to start shooting early next year, who should fans expect to see making a navel-gazing cameo? But first, here are the most WTF-worthy Batman movie cameos we've had so far...
Stay at home dad who spends as much time teaching his kids the merits of Martin Scorsese as possible (against the missus' wishes).
General video game, TV and film nut. Occasional sports fan. Full time loon.