Michelle Guthrie

In the annals of ABC's estimates appearances -- from the glory days of David Hill going toe-to-toe with Bronwyn Bishop in the early hours of the morning, through John Faulkner putting Jonathan Shier under the microscope to Eric Abetz devoting hours to accusing the ABC of bias, murder, war crimes, genocide etc -- there's rarely been a less glorious performance from an ABC executive than from one-time journalist Alan Sunderland last night.

It's unusual for the ABC to unite government and opposition senators, who come to ABC issues from diametrically opposed perspectives, but so it proved last night when Labor's new senator Kristina Keneally, Deborah O'Neill and WA Liberal Linda Reynolds all gave Sunderland a bollocking for rocking up to hearings with the smoke from the Emma Alberici censorship debacle still hanging in the air, and refusing to answer questions.