Now here’s a classic. This is a filmed performance by the 1982 national touring company of Sweeney Todd, with George Hearn replacing Len Cariou in the title role (very commendably), but with Angela Lansbury still playing her Tony-winning role as cannibalistic piemaker Mrs. Lovett. Stephen Sondheim’s music and lyrics are as good as musicals get, the story is great, and this particular performance is well worth setting your DVRs to capture. Attend the tale of Sweeney Todd…