Howard Stern has been on quite an interview bender lately while promoting his new book, Howard Stern Comes Again.
According to Uproxx, in the process Stern revealed to Rolling Stone the one person who he wished he could apologize to before it was too late. That person was Robin Williams, who committed suicide in 2014 at the age of 63.
Why apologize? Stern got ugly in an adversarial interview with Williams in the 1990s, wherein he wanted to one-up an idol.