List of shows and episodes, all times Eastern:

6am-That Girl: "Christmas and the Hard-Luck Kid" (S1E16, OAD: December 22, 1966)
6:30am-Love, American Style: "Love and the Oldlyweds; Love and the Christmas Punch" (S4E4C&E10A, OADs: October 6 & November 17, 1972)
7am-Square Pegs: "A Child's Christmas in Weemawee" (E11&E12, OAD: December 20, 1982)
8am-The Brady Bunch: "The Voice of Christmas" (S1E12, OAD: December 19, 1969)
8:30am-Family Affair: "Christmas Came a Little Early" (S3E7, OAD: November 11, 1968)
9am-The Danny Thomas Show: "Christmas and Clowns" (S4E13, OAD: December 24, 1956)
9:30am-The Donna Reed Show: "A Very Merry Christmas" (S1E14, OAD: December 24, 1958)
10am-The Lucy Show: "Together for Christmas" (S1E13, OAD: December 24, 1962)
10:30am-The Beverly Hillbillies: "Home for Christmas" (S1E13, OAD: December 19, 1962)
11am-The Beverly Hillbillies: "No Place for Home" (S1E14, OAD: December 26, 1962)
11:30am-Petticoat Junction: "Cannonball Christmas" (S1E14, OAD: December 24, 1963)
12pm-The Monkees: "The Monkees' Christmas Show" (S2E15, OAD: December 25, 1967)
12:30pm-Full House: "Our Very First Christmas Show" (S2E9, OAD: December 16, 1988)
1pm-Happy Days: "Guess Who's Coming to Christmas" (S2E11, OAD: December 17, 1974)
1:30pm-Laverne & Shirley: "Christmas at the Booby Hatch" aka "Oh, Hear the Angel Voices" (S2E10, OAD: December 21, 1976)
2pm-The Odd Couple: "Scrooge Gets an Oscar" (S1E12, OAD: December 17, 1970)
2:30pm-Gilligan's Island: "Birds Gotta Fly, Fish Gotta Talk" (S1E12, OAD: December 19, 1964)
3pm-The Love Boat: The Christmas Cruise (OAD: December 25, 1986)
5pm-Mama's Family: "Santa Mama" (S3E13, OAD: December 20, 1986)
5:30pm-ALF: "ALF's Special Christmas" (S2E12&E13, OAD: December 14, 1987)
6:30pm-Bridget Loves Bernie: "'Tis the Season" (E14, OAD: December 16, 1972)
7pm-The Mary Tyler Moore Show: "Christmas and the Hard-Luck Kid II" (S1E14, OAD: December 19, 1970)
7:30pm-The Dick Van Dyke Show: "The Alan Brady Show Presents" (S3E13, OAD: December 18, 1963)
8pm-The Honeymooners: A Christmas Carol (OAD: November 28, 1977)
9pm-The Honeymooners Christmas Special (OAD: December 10, 1978)
10pm-Cheers: "Where There's a Will..." (S2E12, OAD: December 22, 1983)
10:30pm-Cheers: "The Book of Samuel" (S5E11, OAD: December 11, 1986)
11pm-Cheers: "A House Is Not a Home" (S5E25, OAD: April 30, 1987)
11:30pm-Cheers: "Christmas Cheers" (S6E12, OAD: December 17, 1987)
12am-Taxi: "A Full House for Christmas" (S1E13, OAD: December 12, 1978)
12:30am-The Bob Newhart Show: "Bob Has to Have His Tonsils Out, So He Spends Christmas Eve in the Hospital" (S4E15, OAD: December 20, 1975)
1am-The Bob Newhart Show: "'Twas the Pie Before Christmas" (S6E12, OAD: December 24, 1977)
1:30am-Bob: "A Christmas Story" (S1E12, OAD: December 21, 1992)
2am-Bob: "Have Yourself a Married Little Christmas" (S2E7, Unaired)
2:30am-Carol Burnett and Friends: "Family Christmas/Nobody Does It Like Me"
3am-The Many Loves of Dobie Gillis: "Jangle Bells" (S2E10, OAD: December 20, 1960)
3:30am-Our Miss Brooks: "Christmas Show" (S1E13, OAD: December 27, 1952)
4am-The Adventures of Ozzie and Harriet: "The Christmas Tree Lot" (S6E11, OAD: December 18, 1957)
4:30am-The Adventures of Ozzie and Harriet: "The Girl in the Emporium" (S9E12, OAD: December 14, 1960)
5am-The Adventures of Ozzie and Harriet: "A Piano for the Fraternity" (S9E13, OAD: December 21, 1960)
5:30am-The Adventures of Ozzie and Harriet: "The Pen and Pencil Set" (S9E29, OAD: April 12, 1961)