ER: The complete fourth season

Disc 1. Ambush ; Something new ; Friendly fire ; When the bough breaks --

Disc 2. Good touch, bad touch ; Ground zero ; Fathers and sons ; Freak show --

Disc 3. Obstruction of justice ; Do you see what I see? ; Think warm thoughts ; Sharp relief --

Disc 4. Carter's choice ; Family practice ; Exodus ; My brother's keeper --

Disc 5. A bloody mess ; Gut reaction ; Shades of gray --

Disc 6. Of past regret and future fear ; Suffer the little children ; A hole in the heart.