I don't have a favourite actress/actor, and don't often see movies either in the theatre or rented.
I'm also not much of a TV fan, although I do admit an addiction to The Big Bang Theory.
More than anything, I appreciate live, good musical talent, and I am fortunate that there is plenty of it here in our little corner of the world.
A tie between film and live theatre. Both are wonderful when they're at their best. TV isn't even in the running, since you use the term "actor/actress," which I take to mean fundamentally drama/comedy.
We average a play every two weeks, movies far more often (many of them at home in the TransLux (newly upgraded with really cool surround amps). Even so, I'm not nearly as interested in individual actors as I am in great ensemble performances. That's where the magic happens.
At our beloved Arena Stage a few weeks ago we saw Phylicia Rashad in Every Tongue Confess, a new play based on the church burnings in Alabama and Kentucky in 1996. She was just fine, but so was the rest of the cast, and they quite properly took their bows together. It's when the actors derive their energy and their drive from each other that the work really comes alive.
I love local theater .The actors are "hungry" and want to make it to mainstream theater .However ,it is rare that they get there .I have playbills of hundreds of local and refional theater that I've been to since 1965 and very few haver made it.
I did get to see James Earl Jones in 1966 and that was a great experience.