"I've done a lot of stories," Kroft understates during 25th anniversary celebration
...but Maggie Smith swears she had nothing to do with Herbert Ross' demise
First and only interview on the 9/11 mastermind's demise will air on May 8.
In more excerpts from Sunday's "60 Minutes," Coco says he has no regrets, and he didn't get screwed
Conan will talk to Steve Kroft one day after he's contractually able