Are you thinking of Susan Sarandon?
There's probably not much difference in their ideology.
I think the character in Bull Durham liked Susan Sontag.
I went through this entire thread without seeing the Bull Durham quote - please forgive me if I missed it.
Here is Kevin costner as Crash Davis in "Bull Durham"
Well, I believe in the soul, the p***s, the v****a, the narrow area of a woman's back, a baseball that is pitched so that I can easily hit it far, lots of fiber in my food, good scotch, and that the novels of Susan Sontag are self-indulgent, overrated and horrible. I believe Lee Harvey Oswald acted alone when he killed President John F. Kennedy. I believe there ought to be a constitutional amendment outlawing artificial grass and the rule that allows a baseball team to choose a player at the beginning of the game to substitute for the pitcher in batting. I believe in hitting the baseball with the part of the bat that vibrates less and doesn't hurt my hands as much, pornography that doesn't show sex acts in a very explicit way, opening your presents Christmas morning rather than the night before Christmas, and I believe in long, slow, deep, soft, wet kisses that last three days.
In the movie BULL DURHAM the Kevin Costner character states that he thinks the novels of Susan Sontag are over-rated booshwa, or something to that effect.