Although I'm definitely not as young as I used to be, I'm still MUCH younger than Larry ! So I'll take my pick from the fairly modern era.

Ian Lougher - last lap of the 1990 Junior 250 race, at a speed of 117.80mph. Steve Hislop revealed in his book that this was the hardest he ever rode round the TT course (which is saying something), yet still he couldn't catch Lougher on that lap. And despite the improvement in machinery, the record stood for 9 years which is testament to what a great achievement it was.