A very nicely, well written mostly Carol-centric episode.
It's her time to go back to the ER, she isn't completely over it yet and keeps having flashes of it. I really like Carol, she's very sweet and down-to-earth. Kind of like 'the original heart of the show'. This is also the episode that introduces her relationship with John Tag. The character I most hated the first season.
Meanwhile, poor Susan starts screwing up at work and no one backs her up. Carter keeps sleeping around with a hooker and Mark Greene tries to help an Asian family from an abusive father. Pretty nice - basic ER. no masterpiece, but very enjoyable anyway. I liked the singing lady a lot. Sweet.
The end of the episode was also nice, a welcome party for Carol. Sweeeeeeeet.