My favorite I can remember is when Peyton Manning broke Marino's single season TD record against the Chargers, f*ck Tom Brady! There was a few other records set that day too, I think Gates set a TE record, and maybe Reggie and Marvin broke 1000 yard for the season each? Not 100% sure on that
I saw game 7 of the Orlando-Detroit 3-1 comeback series.
Game 4 of the Lakers-Pistons '04 Finals.
Game 7 of the '06 Pistons-Cavs conference Semi-Finals.
Game 4 of the '05 Heat-Pistons Conference Finals.
I was at the extra game to decide the '87 Pennant between the Blue Jays and Tigers; Tanana with the shutout and Dave Herndon hit the solo shot to win 1-0.
Darren McCarty's hat trick in Game 1 of the 01 or 02 Western Conference Finals against the Avalanche.
april 21, 1996- bulls vs washington bullets last game of the regular season, it was the bulls 72nd win of the season.
1997 first round game 3- bulls vs bullets, bulls won the series on pippen's dunk where he hurt his back
2001 nba all-star game in DC
2003 AL division series, red sox vs A's game 3: red sox win on a trot nixon walk off homer to avoid elimination
2003 al divsion series, red sox vs A's game 4: red sox win on a david ortiz double in the bottom of the 8th to avoid elimination
2004 AL divsion series, red sox vs angels game 3: red sox in the series on a david ortiz walk off home run in the bottom of the 10th
2004 ALCS game 4, red sox vs yankees: dave roberts pinch ran for millar, stole 2nd in the 9th, scored on the bill mueller hit to tie the game, then david ortiz hits a walk-off homer (again) to beat the yankees in 12 innings and bring the sox from down 0-3, to down 1-3
2004 ALCS game 5, red sox vs yankees: david ortiz hits a walk-off single to avoid elimination and pull the sox to 2-3 in the series.
2004 World Series game 1 and Game 2: red sox vs cards. i had tickets to game 6 and 7 as well but the sox swept and won in st. louis
2007 world series game 2 red sox vs rockies
ive also seen tim duncan and paul pierce hit buzzer beaters to win the game versus the wizards, and ive seen rex chapman, chris whitney, and jerry stackhosue hit buzzer beaters to win games for the bullets/wizards- the stackhouse shot was on espn vs the lakers which was pretty cool.