It's Always Sunny in Philadelphia: Seasons 1 & 2

Mac (McElhenney), Charlie (Day) and Dennis (Howerton) star as three best friends who own Paddy's Irish Pub in Philadelphia, along with Dennis' sister Dee (Olson) who works as the bartender. In each episode, these characters have their own self-interest in mind, no matter how unique or mundane the situation. While they generally are interested in making the business successful, they sometimes have a greater interest in scamming one another. Serious issues such as racism, abortion, underage drinking, molestation, cancer and death somehow weave their way into the cockeyed universe of these four 20-somethings. The second season introduced Frank Reynolds (DeVito) as Dennis and Dee's estranged father, who tries to reconnect with his children and rekindle his misspent youth while in the midst of a divorce from their mother Barbara (played by Anne Archer).