Technically, a hat-trick must be three wickets with consecutive balls in the same match. The oddest hat-trick taken was that by one Mervyn Hughes (Aus) who took the ninth wicket of the first innings with the last ball of one over, the 10th (and final) wicket with the first ball of his next over, and a wicket with his first ball in the second innings.

Thanks for that, Doc. I remember seeing that match back in '92 or '93 and I didn't realise the significance of what he'd done (not could I remember the bowler until now) until Richie Benaud pointed it out to one and all. Even Geoff Boycott didn't notice it!