Paget Brewster
When Gerald's mother was revealed, I spent several minutes racking my brain trying to figure out where I'd seen her before. I didn't catch Paget Brewster's name in the credits, otherwise, I would have recognized her from "Criminal Minds" fame even though I'd never seen that show.
After a few minutes, I started remembering her from being in a 90's sitcom, then it finally clicked that I had just seen her the night before when I caught a few minutes of this "Friends" episode: The One with the Dirty Girl (1997). I never realized until last night that Kathy was played by Paget Brewster.