The real winner in all of this, oddly, is David Letterman.

I never found him particularly funny. All of his stuff is scripted to a T and it shows.

However, while NBC had the whole Leno retiring-Conan replacing him-Leno not retiring-Leno new show in same time slot-Conan Tonight show taking a back seat-Conan leaving-Leno back on Tonight Show-Jimmy Fallon afterward thing,

CBS simply remained consistent with Letterman.