This episode is exactly what a Transformers episode whould be. The appeal of the original series and Beast Wars was the fact that these characters were soliders fighting against the odds. If only for this one episode, the series ditched the Teen Titans wannabe tone and told the story of a CHARACTER from the TRANSFORMERS world. The development of Ratchet is what makes this episode so good. It shows how he began as a hopeful medic during the war and what caused him to become so bleak. I must add that it was pretty badarse of him to pull a Han Solo and shoot the injured Lockdown before he could attack him.
Oh yeah, and it was neat to see Arcee too.
With this as an example, and future episodes promising to return the autobots to cybertron, this is proving to be a very promising series.