The One Show's Alex Jones was left stunned during Thursday evening's edition of the BBC programme.
Viewers witnessed Alex, who recently delighted fans with a touching social media update, alongside Vernon Kay welcoming Zoe Ball and Sam Ryder to the famous green sofa.
Before the presenting duo chatted with their studio guests, BBC audiences were treated to a pre-filmed segment featuring a familiar television personality.
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Opening the show, Alex announced: "First, we are starting tonight by celebrating an iconic BBC series that brought the future of technology to millions of living rooms."
Vernon continued: "Household favourite, this month marks 60 years since Tomorrow's World began predicting the future, but did it get any of it right?! There was so much stuff on that show, the show's former presenter Philippa Forrester has been out to investigate."
The programme then switched to a pre-recorded piece featuring Philippa examining whether the show's forecasts had materialised, reports Wales Online.
Philippa served as one of the hosts on the cherished series during the 1990s, before its conclusion in 2003.
Following the segment, both Alex and Vernon appeared astonished by Philippa's youthful looks.
Alex remarked: "Oh, thank you, Phillippa! Who, by the way, hasn't aged at all! No." Vernon echoed her sentiment, responding: "Not changed, not changed."
Whilst praising the 'brilliant' programme, Alex informed viewers that their guest Sam was a devoted admirer of the technology series. The singer responded: "It felt like a promising gateway to the future! Loved watching it everytime, loved it."
Reflecting on the footage of Philippa, Alex remarked: "It's amazing though, to see how many of those things we saw there have come to fruition in one way, shape or form."
The Tomorrow's World segment showcased archive material of Philippa seated in the rear of a vehicle, sporting a headset.
She was explaining to viewers that future technology would enable meetings to take place from any location across the globe - a prediction that indeed became reality.
In the nostalgic footage, she declared: "Within the next decade, I'll be able to have a virtual meeting, anywhere. In the back of a car for example! They'll appear right before my eyes."
The One Show is available to watch on BBC iPlayer.
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