"Parineeta" girl Vidya Balan not only stays in high spirits during late night shooting schedules, but also manages to keep everyone cheerful with her mimicry skills.

"Vidya is an excellent mimic and she imitates other actors with utmost ease. She is the life of our night schedules. She is high in spirits even at four in the morning. Neither does she feel sleepy nor does she let anyone get bogged down by work pressure," a unit member said.

"She always keeps smiling and cracking jokes," he added.