Four Uni students will be performing in the Champaign Urbana Ballet's annual holiday production of "The Nutcracker" this weekend and next Saturday: Karolina Kalbarczyk, Sophie Shenk, Claire Liu, and Simone Ballard. The first performance is tonight at 7:30. Anna Cangellaris, a veteran of "The Nutcracker" herself, went to a recent rehearsal and came back with this preview.