| 01/07/90 | 90-01 | The Dr. Demento Show #90-01 - January 7, 1990
Topic: Crispin Glover interview | | |
| 01/07/90 | KLSX-90-01 | The Dr. Demento Show (live on KLSX) - January 7, 1990
Topic: The Dr. Demento Funny 25 for 1989 | | |
| 01/14/90 | 90-02 | The Dr. Demento Show #90-02 - January 14, 1990
Topic: Flo & Eddie interview | | |
| 01/21/90 | 90-03 | The Dr. Demento Show #90-03 - January 21, 1990
Topic: Spike Jones tribute | | |
| 01/28/90 | 90-04 | The Dr. Demento Show #90-04 - January 28, 1990
Topic: all-request show | | |
| 02/04/90 | 90-05 | The Dr. Demento Show #90-05 - February 4, 1990
Topic: Phyllis Diller interview | | |
| 02/11/90 | 90-06 | The Dr. Demento Show #90-06 - February 11, 1990
Topic: silly love songs | | |
| 02/18/90 | 90-07 | The Dr. Demento Show #90-07 - February 18, 1990
Topic: southern-style dementia | | |
| 02/25/90 | 90-08 | The Dr. Demento Show #90-08 - February 25, 1990
Topic: southern dementia part 2/2 | | |
| 03/04/90 | 90-09 | The Dr. Demento Show #90-09 - March 4, 1990
Topic: psychiatry | | |
| 03/11/90 | 90-10 | The Dr. Demento Show #90-10 - March 11, 1990
Topic: demented salute to The Beatles | | |
| 03/18/90 | 90-11 | The Dr. Demento Show #90-11 - March 18, 1990
Topic: comedy w/o words/Lorne Elliott interview | | |
| 03/25/90 | 90-12 | The Dr. Demento Show #90-12 - March 25, 1990
Topic: jazz | | |
| 04/01/90 | 90-13 | The Dr. Demento Show #90-13 - April 1, 1990
Topic: medical dementia |  | |
| 04/08/90 | 90-14 | The Dr. Demento Show #90-14 - April 8, 1990
Topic: springtime | | |
| 04/15/90 | 90-15 | The Dr. Demento Show #90-15 - April 15, 1990
Topic: television | | |
| 04/22/90 | 90-16 | The Dr. Demento Show #90-16 - April 22, 1990
Topic: Star Trek | | |
| 04/29/90 | 90-17 | The Dr. Demento Show #90-17 - April 29, 1990
Topic: Monty Python | | |
| 05/06/90 | 90-18 | The Dr. Demento Show #90-18 - May 6, 1990
Topic: all-request show | | |
| 05/13/90 | 90-19 | The Dr. Demento Show #90-19 - May 13, 1990
Topic: Mother's Day | | |
| 05/20/90 | 90-20 | The Dr. Demento Show #90-20 - May 20, 1990
Topic: tobacco | | |
| 05/27/90 | 90-21 | The Dr. Demento Show #90-21 - May 27, 1990
Topic: alcohol/Tommy Chong interview | | |
| 06/03/90 | 90-22 | The Dr. Demento Show #90-22 - June 3, 1990
Topic: summertime/Pinkard & Bowden interview | | |
| 06/10/90 | 90-23 | The Dr. Demento Show #90-23 - June 10, 1990
Topic: food | | |
| 06/17/90 | 90-24 | The Dr. Demento Show #90-24 - June 17, 1990
Topic: Father's Day | | |
| 06/24/90 | 90-25 | The Dr. Demento Show #90-25 - June 24, 1990
Topic: rap | | |
| 07/01/90 | 90-26 | The Dr. Demento Show #90-26 - July 1, 1990
Topic: demented moments in American history | | |
| 07/08/90 | 90-27 | The Dr. Demento Show #90-27 - July 8, 1990
Topic: fish | | |
| 07/15/90 | 90-28 | The Dr. Demento Show #90-28 - July 15, 1990
Topic: Mel Blanc tribute | | |
| 07/22/90 | 90-29 | The Dr. Demento Show #90-29 - July 22, 1990
Topic: Christmas in July | | |
| 07/29/90 | 90-30 | The Dr. Demento Show #90-30 - July 29, 1990
Topic: dieting | | |
| 08/05/90 | 90-31 | The Dr. Demento Show #90-31 - August 5, 1990
Topic: all-request show | | |
| 08/12/90 | 90-32 | The Dr. Demento Show #90-32 - August 12, 1990
Topic: Tom Lehrer CD release celebration | | |
| 08/19/90 | 90-33 | The Dr. Demento Show #90-33 - August 19, 1990
Topic: doggie ditties | | |
| 08/26/90 | 90-34 | The Dr. Demento Show #90-34 - August 26, 1990
Topic: cats | | |
| 09/02/90 | 90-35 | The Dr. Demento Show #90-35 - September 2, 1990
Topic: work | | |
| 09/09/90 | 90-36 | The Dr. Demento Show #90-36 - September 9, 1990
Topic: football | | |
| 09/16/90 | 90-37 | The Dr. Demento Show #90-37 - September 16, 1990
Topic: the shortest demented songs ever made | | |
| 09/23/90 | 90-38 | The Dr. Demento Show #90-38 - September 23, 1990
Topic: automobile tribute part 1/2 | | |
| 09/30/90 | 90-39 | The Dr. Demento Show #90-39 - September 30, 1990
Topic: cars part 2/2 | | |
| 10/07/90 | 90-40 | The Dr. Demento Show #90-40 - October 7, 1990
Topic: salute to parody songs | | |
| 10/14/90 | 90-41 | The Dr. Demento Show #90-41 - October 14, 1990
Topic: all-request show | | |
| 10/21/90 | 90-42 | The Dr. Demento Show #90-42 - October 21, 1990
Topic: hunting/Two Live Jews interview | | |
| 10/28/90 | 90-43 | The Dr. Demento Show #90-43 - October 28, 1990
Topic: Halloween | | |
| 11/04/90 | 90-44 | The Dr. Demento Show #90-44 - November 4, 1990
Topic: British dementia | | |
| 11/11/90 | 90-45 | The Dr. Demento Show #90-45 - November 11, 1990
Topic: British dementia part 2/2 | | |
| 11/18/90 | 90-46 | The Dr. Demento Show #90-46 - November 18, 1990
Topic: Laszlo & Gary interview/Dickie Goodman tribute | | |
| 11/25/90 | 90-47 | The Dr. Demento Show #90-47 - November 25, 1990
Topic: Thanksgiving/musical turkeys | | |
| 12/02/90 | 90-48 | The Dr. Demento Show #90-48 - December 2, 1990
Topic: movies | | |
| 12/09/90 | 90-49 | The Dr. Demento Show #90-49 - December 9, 1990
Topic: skiing/wintertime | | |
| 12/16/90 | 90-50 | The Dr. Demento Show #90-50 - December 16, 1990
Topic: Christmas part 1/2 | | |
| 12/23/90 | 90-51 | The Dr. Demento Show #90-51 - December 23, 1990
Topic: Christmas part 2/2 | | |
| 12/30/90 | 90-52 | The Dr. Demento Show #90-52 - December 30, 1990
Topic: The Funny 25 for 1990 | | |
| 12/30/90 | KLSX-90-52 | The Dr. Demento Show (live on KLSX) - December 30, 1990
Topic: Funny 25, 1990 | | |