Reminds me of how if a travel agent hadn't screwed up we wouldn't have had any of Seth MacFarlane's contributions to pop culture post-9/11. Now that'd be pretty tough to fathom and quite depressing too.
Mark Wahlberg was also scheduled to fly on Flight 11, but canceled at the last minute.
On a sad note....one of the co-creators of Frasier was on Flight 11 with his wife, along with the wife of Anthony Perkins.
Wait, the guy who played Norman Bates? I thought he was gay.
Even if he was, it was a different time, even in Hollywood (where not much has changed, to be honest). If you were gay, you were pressured to marry a woman and keep up appearances. Stories of affairs with other men only really come up posthumously.