Who told Rachel about Ross's infidelity when they were 'on a break'?

Gunther

Who impersonated Alastor Moody in Harry Potter and the Goblet of Fire? Whose wedding was attacked by Death Eaters in 'Deathly Hallows'? What is the home planet of the Ewoks? What is the process plants use to convert carbon dioxide into glucose? Which video game series has you explore cities filled with infected individuals called 'Clickers'?