I saw this mentioned on another forum, and just has to share it. Many of you may be too young to remember this (even though it doesnt seem all that old to me). Its worth watching just to see the class 37 as a "police train"
http://www.youtube.com/watch?v=iN7naLLeB0A
http://www.youtube.com/watch?v=iN7naLLeB0A