Muhammad Ali was a delight when he came to Ireland in 1972 for his Croke Park bout with Al Lewis. It was the subject of a documentary, which hopefully RTE will dust off the archives soon.
A clip of that trip, from a US promotion of Ali's trip which never aired surfaced online. Ali is seen promoting Ireland and the Irish people - including everything from whiskey to GAA.
In fact, Ali mentions that GAA players look pretty rough, and he should stick to boxing: