Corrected entry: At one point, Karen tells Jack that she had her mother committed, which doesn't make any sense because in the next season, in "Someplace Old, Something New", Suzanne Pleshette debuts as Karen's Mother, Lois Whitley, and we learn that Karen was estranged from Lois due to Lois' con artist ways.
Gypsies, Tramps and Weed - S3-E7
Corrected entry: Will's mum sends over a collar belonging to his old dog, Daisy, who he apparently thought he would have for the rest of his life, and he was really upset when she died (while he was at college). But in "The Truth About Will And Dogs" (Season 1) Grace is trying to persuade him that they should get a dog together, and Will states that he doesn't like dogs.
Correction: That's WHY he doesn't like dogs: Daisy dying broke his heart and he never wants to go through that again.
Correction: Yes, Karen was estranged from her mother due to her con artist ways. She didn't want her friends to know her mom was a con artist and that she had helped her, so it's quite possible she just made up the commitment part to explain why none of them ever saw or heard of her mother.
LuMaria 1