Thank goodness for Helena Bonham Carter and Sacha Baron Cohen… otherwise, someone might confuse Russell Crowe’s performance as the most inept in Les Misérables. Actually, Crowe’s quite a bit better than Eddie Redmayne and Amanda Seyfried too. Redmayne just can’t sing–neither can Crowe, but it doesn’t impair his acting too much–and Seyfried’s just misused. Director…