* GrowingTheBeard: Sadly averted. The written but unproduced mid-season episode "To The Ends Of The Earth" would have been to ''Crusade'' what "Signs And Portents" was to ''Series/BabylonFive''.
* HoYay: A fair amount of it between Galen and Gideon over the course of the series. Starting with Galen getting himself in trouble with the order for saving Gideon's life in the first place, and, well, this scene in "The Memory of War" sums up the rest:
-->'''Galen:''' Look [[FirstNameBasis Matthew]], to those of us in my order, another Technomage is the only family have. After I was asked to leave the order as a penalty for having too much contact with the outside, I came to rely on you.
-->''(Gideon gives Galen an odd look)''
-->'''Galen:''' [[VerbalBackspace And... and on the others.. and on this place.]]
** Back when this actually aired on TV, this troper showed a Galen[=/=]Gideon scene to a friend who was not familiar with the show, was not into slash or familiar with shipping. I asked if I was imagining the HoYay. His response was unequivocal: "It's not your imagination!"
* RetroactiveRecognition: Daniel Dae Kim got his break here, having been relegated to 'token' Asian roles in the past. Kim is one of two actors to play both a [[{{Series/Angel}} Wolfram & Hart]] lawyer and a survivor of [[{{Series/Lost}} Oceanic Flight 815]]: The other is Sam Anderson. He currently stars in the ''Hawaii Five-0'' remake.
* ScrewedByTheNetwork: The most noticeable artifact is the scrambled episode order, but that's just the beginning of it (see trope page for more).