'No More Mr Nice Guy' ran the tagline of an advert for Walkers crisps that tickled the nation 30 years ago. Now it's as stale as a packet of cheese-and-onion from the 1990s. To the equally cheesy strains of Peters and Lee singing Welcome Home, the ad featured former England football captain Gary Lineker returning to his native Leicester, after two years' playing football in Japan. He shook hands with fans, joined a lads' kickabout in the street, kissed babies . . . then snatched a child's bag of crisps and scarpered. 'A crisp as irresistible as Walkers?' chuckled Hugh Laurie's voiceover, before delivering that perfect line: 'There's no more Mr Nice Guy.'