I'll post for some bay teams within the last few years since I go to a ton of games. Each Raider game I've been to they lost and nothing special happened so I'm not including them.
Oakland A's
When the A's clinched this year. Me in my typical front row seat. Here is a random youtube video followed by me randomly recording that 1st highlight showed with my camera phone
San Francisco Giants
The walkoff versus the Dodgers last season, i was behind home plate but u cant see me
Golden State Warriors
The 'WE BELIEVE' series in 2007. That year marked my 1st NBA game early in the season. I was at the 1st home game of the series(Game 3) and (Game 6) when we clinched the upset. Up until the 49ers game, which is next on the list, was the greatest atmosphere I had been apart of as a fan. From game 6:
San Francisco 49ers
The single greatest game I've seen in person and I'm not a 49er fan. The upset, the amazing tailgate before, the atmosphere and being underdogs.
Not a 49er fan at all but the emotion of the game brought back memories, I even almost shed a tear right now. I appreciate great games.