Teri Hatcher and James Denton were on Desperate Housewives (2004) together. They played Susan Myers and Mike Delfino.
The episode title "Paymer vs Paymer" seems to be a variation of Kramer vs. Kramer (1979) starring Dustin Hoffman and Meryl Streep. The film centers on a custody battle between the former spouses.
Roselyn Sanchez and Eva Longoria are close friends and Longoria starred on Desperate Housewives (2004)