£50 Says You'll Watch This (C4); Great Ocean Adventures: The Giant Sunfish (five): HARDEEP Singh Kohli likes nothing better than Sunday night home games of poker - "cards in one hand, vodka tonic in the other, surrounded by friends and finger food".

So, as a gambling man, he took a chance and went to play in a poker game on US TV. He worried that he'd "look like a stupid arse" but what happened was far worse - he was humiliated by the mind games of the other players.

He made a fatal error before the game even began by using the f-word in a casual remark. You'd have thought he'd burned the US flag from the other players' shocked reactions. "In America it's okay to carry guns and invade countries, you just can't swear," he observed.

He never recovered from his faux pas. The others closed ranks and virtually ignored him, chattering among themselves. They ganged up on the outsider, not physically but psychologically. "Everyone round the table is having a good time but the banter's just making it worse," said Kohli.

The pressure really got to him. "I am shaking," he admitted afterwards. "It wasn't a pleasant experience, there was a lot of negative energy around the table."

This was the second episode of the entertaining presenter's gambling guide in which he's taken £7,000 of his own money to investigate how the UK and its citizens have gone gambling crazy.

He's put money on everything from egg-and-spoon races to jumping into a swimming pool fully-clothed - and was more than £2,000 down by the end of the show.

Poker is close to his heart, making his TV experience all the more unhappy. He met some of the big players in Las Vegas. Daniel Negreanu arrived in the city at 21 and has become one of the most successful poker players of all time.

He claims that he's "just a regular dude" but how can he be regular after winning more than eight million dollars?

The new generation of players have become millionaires from internet poker. Twenty-year-old online player JP Kelly spends as much as ten hours a day gambling.

"Don't you feel like a bit of a geek?," asked Kohli. "Yes," he replied. Although he could have added, "But a rich geek."

His best-ever weekend was a three-day poker marathon which made him $25,000 the richer. He even found time to pop out for Sunday lunch with his family between sessions.

Monty Halls' gamble in Great Ocean Adventures was on finding one of the "true mysterious giants of the ocean" - the mola-mola, which sounds like a nasty disease but is, in fact, a very big fish.

When he finally came face-to-face with one underwater Halls was amazed. From fin to fin, the fish was taller than him. But this is a dirty beast, covered in more parasites than any other animal in the sea and needs a lot of grooming. I mean the mola-mola, of course, not Halls.