Ahh... the memories of BSG. Funny thing that. Follow some of my logic here:
Donald P. Bellisario started out as a writer for Glen A. Larson and wrote a number of the episodes of BSG. One episode, he did NOT write, however, was Experiment in Terra, where Apollo is recruited by beings from the Ship of Lights and 'transported' to the Planet Terra to make sure peace negotiations with the Eastern Alliance go smoothly. I say 'transported', because although it IS Apollo, the beings have altered reality so that everyone that sees him thinks he's this other guy that's part of the peace negotiations. He also has a guide from the beings of light to help him with his mission, but only he can see and hear him.
10 years later Mr. Bellisario would create, produce and write Quantum Leap.
Okay, back to talking about the awesomeness of Firefly and how Mal can kick Kirk's, Picard's AND Sheridan's asses with one ear ripped off.