A few good punts for me in the past... first one that spring to mind..
Backing madam macie at 100/1 at catterick last year, first time out 2 yr old and romped home! and then simple jim on the same card also won , great day
had a 550/1 placepot in times gone by, used to do them alot but not so much now.
put big lumps of money on kauto star for gold cups/king georges
hopefully got another to come.... hanagan for flat jockeys championship at 40/1