Star Tribune film critic Colin Covert takes a look at this year's Oscar nominations for best supporting actor -- and who got robbed. The nominees are: Christoph Waltz, "Django Unchained"; Philip Seymour Hoffman, "The Master"; Robert De Niro, "Silver Linings Playbook"; Alan Arkin, "Argo", and Tommy Lee Jones, "Lincoln."  | Read our complete Oscars coverage.