This year's least essential programme invites Laura Whitmore, Chris Kamara, Rachel Johnson, Julian Clary and Tom Davis to go out for dinner and play parlour games to dodge the bill. It commits the cardinal sin of being less fun to watch than appear on, but they all seem nice enough.

My Teenage Diary just keeps getting better. It's like a raunchier Desert Island Discs, and this week's diarist, Rachel Johnson, is marvellous. Her "gap yah" with brother Boris makes for essential listening, but don't expect adolescent angst.

Johnson is no Adrian Mole; her crisp, journalistic style was already perfected at the age of 18. When she does open up, the results are fascinating, whether she's worrying about her relationship with her father or just lusting after the locals while working in an Israeli valve factory ("Israeli soldiers," she informs us, "are really hunky").

Interestingly, before the broadcast Boris made Rachel promise to keep any stories about him "on brand". What we find out about the Mayor is entertaining enough but we can only imagine what those "off brand" anecdotes might be like.

If this new panel show sounds familiar it's because host Miles Jupp tested the idea in 2011 in a round called What Does My Dad Know? in Angus Deayton's It's Your Round series on Radio 4.

The brief has now expanded beyond questioning his own father to getting three guests to test someone who supposedly knows them well with questions such as "Who would I rather spend an evening with: George Clooney or God?" Des Lynam picks his agent to answer these Mr and Mrs-style questions. Rachel Johnson opts for a girlfriend she met when they were in their 20s. And Mark Steel puts his faith in his teenage son. One couple does very well indeed, another faces predictable embarrassment and there's a duo who might just as well have never met before.

Listen out for a particularly saucy comment from Mr Lynam - his agent certainly wasn't expecting this when she agreed to appear with him.

New panel game, the premise of which is to see how well the contestants know their nearest and dearest. Rachel Johnson, Des Lynam and Mark Steel will each nominate a chosen relative or friend to whom, privily, a list of questions will be put. Chairman Miles Jupp will then test the panel's knowledge by asking them to predict what answers the nominees gave. Sounds oddly similar, perhaps, to those old TV games that came with loud buzzers, manic studio audiences and major prizes. No prizes though for guessing this week's celebrity guest, Michael Winner.