This video has been very popular recently, as indeed it should.
It's a wonderful idea where Youtube user/filmmaker Jeremiah McDonald, now at age 32, has a conversation with his 12-year old self. I feel this will catch on and we'll be seeing a lot of people trying to replicate it in the future.
The amazing victory of Mine That Bird at the 2009 Kentucky Derby. Although not the worst-seeded horse in the race (its odds were at 50-1, while two other horses' were at 55-1 and 51-1) it was not expected to achieve anything. In fact, at the beginning of the race, it was so far back that the commentator simply ignored it until he realized it was the one leading seconds before it crossed the finishing line.