Film critic TV guys Roger Ebert and Richard Roeper echoed the sentiments of HE reader “III Rathbun” on Sunday’s (2.26) show in saying they’d love to see legendary director Robert Altman let fly with his core feelings about the mainstream Hollywood establishment when he accepts his career Oscar on Sunday, 3.5. I’ll never forget my asking Altman about the Los Angeles riots of ’92 when I ran into him at the Cannes Film Festival in their immediate wake. Knowing I was reporting for Entertainment Weekly, he said, “This subject is too important to be discussed in your magazine.” How could I argue?