I guess I don't know what you mean by "never bounced back". Tucker Carlson hosted a show on MSNBC called "Tucker" for multiple years after Crossfire's cancellation, until around the end of 2008 iirc. I think if you get your _own_ TV show, and it runs for a few years, that's "bouncing back".
Both of his shows got cancelled. Hence, never bounced back. When you get demoted from a show host to a "panelist", that's not bouncing back. Its like Conan O' Brian doing stand-up gigs after leaving The Tonight Show.
Well, at some point that happens to everyone. I think he bounced back, but was dropped again. "bounce back" doesn't have to be permanent; it's not like Tucker never received momentum, it ran for almost three years, which is longer than a lot of shows on cable news.
