Tony Banks' 29 yard game winning TD to Shannon Sharpe in 2000 against the Jags.
Mark Brunell and Jimmy Smith were pretty much unstoppable that day and Jacksonville looked to be blowing the Ravens out after 30 minutes, but Banks caught fire the second half and brought the good guys back to take the lead with a little over 3 minutes remaining. Unbelievably Brunell threw a prayer downfield that was batted up in the air and caught by Smith for the TD and a Jags36 -32 lead(yes, the greatest D of all time gave up 36 points to the Jags. lol).
After the furious comeback it looked like the Ravens once again had their usual 4th quarter collapse and most fans started filing out of the stadium. My 9 yo son looked over at me and said "Dad aren't we leaving?" I just said "nope" and we stayed put while stadium was emptying. The Ravens started their last drive at the 25 with a minute and change left. 4 plays later Banks hit Sharpe for his 5th TD pass on the day to secure the 39 - 36 win. Those of us left in the stadium went bonkers!
While there have been many, many other noteworthy plays over the years seeing the excitement and joy on my son's face was priceless and made that play the best of all time for me.