Where the diving goal celebration came from (via Graham Parker in the Guardian):

When [Jürgen] Klinsmann arrived at Tottenham for the 1994-95 season…, [he] was to win the doubters round, starting by disarming them with a celebrated goal on his debut and an even more celebrated celebration (one that is still regularly imitated 20 years later…), as he dived full length on the turf in a parody of his own infamous worst trait. It was a self-deprecating move calculated to appeal to the British sense of irony, and it worked spectacularly well, yet was hardly atypical of a man who had also charmed Italy with his willingness to learn the language and engage with the locals and history of the club at Inter Milan.