
21. Jay Leno – Conan
You may remember back in 2010 when NBC bumped Conan O’Brien’s spot to an hour later and gave the earlier slot to Jay Leno. Although O’Brien ended up leaving the network, there was some unresolved tension between the two, which we don’t really blame it on either of them. After the fiasco, however, Conan admitted that he would never have Leno as a guest on his show because of the tension.
Maybe Conan felt it would have been too awkward between the two? He did joke, however, that he would have him as a musical guest. The real people to blame here are the executives at NBC.