Season 4

The fourth season of Two and a Half Men originally aired from September 18, 2006 to May 14, 2007 on CBS. It was released on DVD on September 23, 2008.

Starring

 * Charlie Sheen - Charlie Harper (24 episodes)
 * Jon Cryer - Alan Harper (24 episodes)
 * Angus T. Jones - Jake Harper (24 episodes)
 * Marin Hinkle - Judith Harper-Melnick (7 episodes)
 * Conchata Ferrell - Berta (20 episodes)
 * April Bowlby - Kandi (5 episodes) (last appearance guest-star)
 * and Holland Taylor - Evelyn Harper (9 episodes)

Recurring

 * Melanie Lynskey - Rose (9 episodes)
 * Ryan Stiles - Herb Melnick (5 episodes)
 * Jane Lynch - Dr. Linda Freeman (2 episodes)
 * Sara Rue - Naomi (2 episodes)
 * Judy Greer - Myra Melnick (2 episodes)