: Many plot points revolved around the realistic tensions of divorce and co-parenting. Key Characters & Cast Highlights

: Charlie and Alan actually liked each other and shared moments of vulnerability.

The series kicks off when (Charlie Sheen), a hedonistic jingle writer living a carefree bachelor life, has his world upended. His tightly wound brother, Alan (Jon Cryer), a chiropractor, moves in after being kicked out by his wife, Judith (Marin Hinkle). Adding to the chaos is Alan’s 10-year-old son, Jake (Angus T. Jones), who visits on weekends. A More "Human" First Season

Charlie discovers his ex-girlfriend has transitioned and is dating his mother.

: Season 1 featured notable early appearances, including Megan Fox as Berta's granddaughter in "Camel Filters and Pheromones" and Heather Locklear as Alan’s divorce attorney. Season 1 Standout Episodes Significance 1.01 Pilot

: Much of the humor derived from Charlie’s well-meaning but incompetent attempts to help raise Jake.

: The season introduced iconic regulars like the sardonic housekeeper Berta (Conchata Ferrell), the boys' narcissistic mother Evelyn (Holland Taylor), and Charlie's boundary-challenged stalker Rose (Melanie Lynskey).