Mother's Day special: Best & Worst movie mums

Movies have had their fair share of memorable mothers over the years, from Julia Roberts's steely determination in Erin Brokovich to Anthony Perkins's disturbing portrayal of Norma Bates in Alfred Hitchcock's 1960 classic Psycho.

To celebrate Mother's Day, Digital Spy takes an in-pictures look at the best and worst of big-screen mums.