@cbsnews: Celebrity tributes poured in following the sudden death of actress Hayden Panettiere, with fellow stars remembering her and sharing heartfelt messages. Viola Davis described Panettiere as “so gifted,” while actress Selma Blair wrote, “Don’t be gone. Please. Please.” Panettiere, who starred in “Remember the Titans” as a child actor and rose to fame in the hit show “Heroes,” died Sunday at 36 years old. Her career spanned more than three decades, including roles in the “Scream” horror film series and the TV drama “Nashville.” #haydenpanettiere