The runnin’ and hoppin’ and leppin’ — and, if you’re Irish, the punchin’ too — will doubtless hog the headlines in London for the next couple of weeks (with the old dopin’ likely to get a bit of a showing too) but, with 26 sports on offer at the Olympic Games, the unfamiliar, the esoteric and the borderline weird will also get their place in the sun and rain.