Taste of Cinema's list description: We can never get enough of our favorite actors, so when they take on multiple roles in the same film, it's a cause for special celebration. Assigning more than one character to a single actor is both a gamble and a sign of ultimate trust in his or her talent. Sometimes it succeeds and sometimes it flops, but when it works well film lovers are given a real treat
Often, the setup is that the characters are twins, which gives an actor the chance to showcase their talent for a range of personalities in one neat package. At other times, the literary motif of the double comes into play, and the performer gets to become the sinister antagonist to his or her own hero. And sometimes, an actor is just given multiple fun characters to make the most of in extravagant fashion.
