I'm have some franchises channels (Rocky / Star Wars / Star Trek) but most of my movie channels are genre oriented for my favorites in those genres: Comedy, Thrillers, Sci-Fi, Horror, War, Mafia, etc. I also have channels dedicated to TV shows.
But my favorite use of virtual channels is for music. I have quite a collection of concert videos (bootleg and official releases) along with music documentaries. I have several artist related virtual channels that show content from just those artists which is mostly concerts, but also shows/docs that. I also have a "concert" channel for all artists that don't have a dedicated channel. I also have dedicated a "music doc" channel.
I also am a Pittsburgh Steelers fan, so I have a channel dedicated to them. This consists of game broadcasts, but also documentaries and TV shows about them. I may eventually split this into a games only channel vs documentaries/shows channel.
I only recently came across the bumpers, but plan to maybe add some of those in my music channels (i.e. for individual song music videos).