Ben Rawson-Jones, Cult Editor of Digital Spy reviews season 4.0:
The apparent discovery of Earth should have been a triumphant moment for both Capricans and the rebel Cylons, but the post-apocalyptic terrain they found totally subverted their and our expectations. The eerie silence as the camera pans across the desolate landscape before revealing a city in ruins is truly breathtaking.
The series continues to transcend the sci-fi genre and bring out real emotions, social issues and conflict. The wait to discover the final Cylon and resume the fourth season in 2009 will be agonising.
io9 reports on how Billy (Paul Campbell) almost came back from the dead in The Hub, but when Campbell wasn't available Jane Espenson did a search and replace on the script and gave all of his lines to Elosha. As Jane told Ron during their podcast commentary for the episode:
In a hallmark of what I consider really fine writing, I just did a global search and replace on the name. I did not change the lines. The only thing I did... I added 'Cue the celestial trumpets.' That one phrase that Elosha has was all I did to change it.