Thank you @kirinm for not doing the ridiculous initials thing.
As someone said upthread, giving loads of identifying details along with initials isn't going to protect you if you make libellous comments. If you aren't making allegations, then you've nothing to worry about in using full names.
I do think that, if its a 90 minute exposee, then it's going to be darker than "a comedian had consensual sex with a fan" or "a TV presenter is a heavy drinker" which are some of the suggestions so far.