FILMING on 'Glee was halted after a terrified Lea Michele spotted a mouse. The brunette beauty -who plays Rachel Berry in the musical TV show - was preparing to break into an ensemble song with the rest of the cast when she spotted the rodent and freaked out shouting Oh my God. its a mouse. According to National Enquirer magazine, Lea and co-stars Heather Morris and Chris Colfer refused to return until the mouse had been removed. The told production staff: We wont come back until you make sure the coast is clear. However, Leas fear of mice is relatively minor in comparison to some celebrities with unusual phobias. Rapper Nicki Minaj refuses to travel on escalators - at a concert in February she insisted photographers travelled to her backstage area at the JW Marriott hotel because she didnt want to take the moving staircase. A source told said: There was a little drama... She had time before she was due to go onstage, but she couldnt be persuaded. But the photographers and crews were desperate for her picture, so they all had to come upstairs and hustle backstage to get the shot. Contactmusic