Guests for "David Letterman," which airs weeknights at 11:35 PM ET, follow:

March 31: Actress Cobie Smulders from the CBS comedy series “How I Met Your Mother”; entertainer Nick Cannon; musical guests Manchester Orchestra
April 1: Actor Dana Carvey; comedian Amy Schumer
April 2: Guests TBA
April 3: Actor Johnny Depp; actor Tony Hale; musical guest Kevin Drew
April 4: Actor Billy Crystal; musical guest Liv Warfield

Guests for "Craig Ferguson," which airs weeknights at 12:37 AM ET, follow:

March 31: Host Drew Carey from the CBS series “The Price is Right” hosts a special April Fools’ Day edition of "The Late Late Show." Guests include comedy legend Carl Reiner; Pulitzer Prize-winning writer and fellow Clevelander Connie Schultz; talk and musical performance by Joan Jett & The Blackhearts
April 1: Actor Jim Parsons from the CBS comedy “The Big Bang Theory”
April 2: Actor Kevin Costner; music by Krystal Keith; comedy by Tony Deyo
April 3: Actor Ashton Kutcher from the CBS comedy series “Two and a Half Men”; music by Roddy Hart & The Lonesome Fire
April 4: Actress Alice Eve; actress Bojana Novakovic; musician Taylor Hicks; music by Roddy Hart & The Lonesome Fire

Lineup of guests is subject to change.