Here's my review for Firefly 1.8: "Out of Gas" (DVD version):
Overall, this episode is easily one of the best episodes of genre television ever written. The plot is wonderfully simple yet structured in a fluid and complex way, revealing much about Mal’s relationship to each character and reinforcing what has already been established. Even the smallest moments work incredibly well, and the entire production from beginning to end is an obvious labor of love. This is an episode that gets better every time.