The cast appears in this episode's setting, orientates, if this is possible. The Challenge is issued, either by the Mascot assuming the voice of the Producers, or whatever other means you find amusing.
Soon, the cast should encounter some moment of obstacle of suspense. Just as the first big decision of the episdoe is about to be called, stop, and do the theme song.
Pick any recorded song that you find suitable and play this from whatever device is convenient.
Lately, we have been using this:
It is ... ahmmm ... an acquired taste. We stop it after the first chorus. Your stamina may vary.
You don’t really have to do this.
In the test campaign, this was where everyone had to find somewhere else beside the game table to put their pizza.