This is based on the research paper "We Are What We Watch: Movie Plots Predict the Personalities of Those who “Like” Them" that I previously mentioned in another thread.
The paper says: "Compared to the average myPersonality user, the average film has fans that are comparatively high on Openness, low on Conscientiousness, and low on Extraversion. This pattern was expected because individual differences in Openness are related to preferences for the arts, and movie watching is a leisure activity that does not require social interaction, which may appeal to people low in Extraversion.": the average actor will also be distinct from the general population, if not necessarily in the same way.
I've put percentile scores for each actor in a table for how they score compared to other actors - that isn't to say they have that personality, just that their fans are more inclined that way. I averaged the scores of all their films. I have weighted the score for each film based on how significant their role is (i.e. a lead role gets a weight of 1, a second ordering is 0.5, third is 0.25, fourth is 0.125 etc.) (There is an "Ordering (Average Rank) column, which you can use to tell if an actor typically plays lead or supporting roles). If the letter is in capitals, it is in the top 40% for that dichotomy. The middle 10% get an "X" (for indeterminate), and the 5% either side (2x5%) get a lower case letter.
There is also a thread for directors.