You find strange things on the Internet. I think it's pretty safe to say that, as a collective, FO's favorite play-by-play guy is Gus Johnson.
I found out today that Gus Johnson has his own website. On this website, Gus Johnson sells custom ringtones of him doing the play-by-play of your favorite team winning a championship. Some announcers might half-ass it.
Not Gus.
I'm not sure what my favorite is yet. The "SWEET LIBERTY!" call for Philadelphia was stupendous, though.