1.) Stranded - When Mark Waugh left his brother, Steve Waugh stranded on 99* (Australia versus England in 1995)
Steve Waugh who played a gritty and scratch innings found himself with last man, Craig McDermott. McDermott who injured his back earlier in the match walked out with a runner - Mark Waugh. So the younger twin brother anxious to help his brother reach three figures (Steve was on 99) took off as soon as Steve Waugh hit the ball straight to Gooch. Despite Mark realizing his misjudgment and turning back, he fell short of the crease making Steve Waugh the second person in cricket to be stranded not out on 99. So from this incident, scientists have figured that there is no telepathic link between brothers; not even among twins! So runners in cricket help science!
2.) Quick feet - When an injured David Gower outran a cheetah
England batsman, David Gower in a ODI match against Australia, asked for a runner after he had apparently sprained his leg. So he was awarded a runner and in the very next ball he faced, he hit the ball into the off-side and took off. In fact he sprinted so fast that he left his runner eating his dust, and when Gower finally realized that he had a runner to do his running, he was half way down the pitch. A Gower with a sheepish smile returned back to his crease amid the spectators rolling in the stands laughing their hearts out. Even the Aussie captain was in splits! The runner was sent back to the dressing room by the umpires. So what did we get out of this? Entertainment! An English comedy to be precise.
3.) The classic four runners - When 'Eccentric' Bomber Wells ran along with three others
Bryan 'Bomber' Wells known for his running antics (he seldom used to run singles and his career consisted of running his partners out. Denis Compton once said of Bomber - "When he shouts ‘YES’ for a run, it is merely the basis for further negotiations!") was involved in the most comical incident involving runners. Once, while batting with a runner for Gloucestershire, Wells' partner, a number 10 batsman was also injured and ended up using a runner. So you have two batsmen and two runners, in the middle. So when Bomber played the ball to mid-off, he called for a run and took off, along with three other players. In the middle of this confusion, one of the runners thought there was a possibility for a second run and shouted aloud 'two'. So with constant shouting between the four running 'runners', 'Yes' and 'Nos' and the 'Two' of course, it was no surprise that all four of them ended up at the same end. As one can imagine, the events taking place in the middle left the crowd, the umpires and the fielding team rolling in the grass laughing. A fielder eventually picked up the ball and took off the bails. Umpire Alec Skedling, who by now had tears rolling down his cheeks, informed the four in a 'serious' tone, "One of you buggers is out. I don’t know which. You decide and inform the bloody scorers!"
Do you need any more reasons for why cricket needs runners after this incident?