Both Harriet Sansom Harris (Catherine Collins) and Christine Estabrook (Emily Previn (S02E05)) are in Desperate Housewives (2004) and play sisters Felicia Tilman and Martha Huber respectively.
They showed Claire's room for the first time, except when they showed it in the pilot episode
Actor Ricardo Chivera (Ramon), and actresses Harriet Sansom Harris (Catherine Collins) and Julie White (Mitzi Dalton Huntley), who all appear in this episode, also feature in Desperate Housewives (2004-2012) as Carlos Solis, Felicia Tilman and Amanda, respectively.