In the classic comedy Blackadder II the late, great Rik Mayall was responsible for one of the most memorable cameo appearances in television history. As the swashbuckling adventurer Lord Flasheart, he gatecrashed Blackadder’s wedding, declaring himself ‘flash by name and flash by nature’. Leaving female guests giddy and male ones open-mouthed in admiration, he then eloped with the spellbound bride.