Walang Tulugan with the Master Showman

The show was originally titled Master Showman Presents. It premiered as a late-night variety talk show similar to GMA Supershow in the late 1970s. It had some elements similar to American talk shows. Master Showman was German Moreno's trademark moniker during his reign as one of television's top TV hosts in the early '80s and '90s, thanks to his hosting stints in GMA Supershow and That's Entertainment.

When GMA Network decided to make a title out of his famous moniker, Moreno introduced the catchphrase/tagline "Walang Tulugan!" (No Sleeping!) during the show. Since then the catchphrase has attracted majority of the viewers.

Master Showman originally aired live from the GMA Broadway Centrum at Aurora Blvd. in Quezon City, Philippines. Airing time varies from 11:05 pm at the earliest to 1:05 am at the latest on Saturday night going to Sunday morning. Running time was usually two to three hours, depending on the availability of big-name guests. When the show moved to its present home at GMA Network Center, it had to do away with live broadcast and instead presented taped episodes. The taping usually occurs every other Friday, shooting two episodes from 5 pm to 2 am, depending on the number of guests. The taped episodes now run from one and a half-hour to two hours, ending not later than 3 in the morning.

In 2005, Walang Tulugan was incorporated in the show title. The move was welcomed since through the years, Master Showman has been always identified by the public as the "show na walang tulugan" (the show that does not sleep).

German Moreno died on January 8, 2016 due to cardiac arrest. A special live tribute episode was aired at Our Lady of Mount Carmel Shrine in Quezon City on January 9, where his wake is being held.

Nora Aunor, a popular Philippine actress, singer, and close friend of Moreno became the temporary main host of the show. In an interview with GMA News, Aunor said that she is willing to continue the advocacy of her close friend and to help establish the careers of young aspirants that wish to join Philippine showbiz.[3]

After more than 19 years of its long-run, Walang Tulugan aired its final episode on February 13, 2016, after a month since Kuya Germs' death.