In season eight of ER, new hopefuls Army Reservist Michael Gallant and brash Gregory Pratt arrive to face the challenges of Trauma One life. A familiar face Dr. Susan Lewis returns. Benton weighs career and family. Malucci crosses the line once too often. Chen defies demotion. And Greene fights what could be his last battle, leaving a void at the group's heart. Also on DVD: season two of Barney Miller; season three of The Girls Next Door, Hawaii Five-O and The Odd Couple; season five of The Simple Life.