Friends Season 1 Ep 11 - The One With Mrs Bing Monica and Phoebe compete for the "attention" of Coma Guy, who gets hit by an ambulance after Monica woo-woo's at him on the street.
Friends Season 1 Ep 6 - The One With The Butt Rachel cleans the apartment by herself for the first time; however, she moves the green ottoman, which starts Monica obsessing.
Friends Season 1 Ep 2 - The One With the Sonogram at the End Ross and Monica's parents Jack and Judy Geller go to Monica's for dinner which makes Monica stressed.