I
really hated how they portrayed her in "The Big LaBlooski."
Her character was terrible in that show! I mean, she put down Mac and said mean things about him in front of everyone and yelled at him for no reason. I love Madame Foster as she is, but that episode just made her this cranky, mean old lady with a bowling problem.
She's totally crazy in the other episodes though, she's batty as... as a bat. XD I loved her debut in the pilot. "It takes me a while to get down the steps, okay? I AM OLD!" and her random hysterical laughter before she abruptly stops laughing always makes me giggle. XD