Not saying it was the most impactful, or most important, but for me I'm glad that the OP included the Brady to Branch bomb in the 2004 AFCCG.
Its sort of hard to imagine now, but at that time we were underdogs to the Steelers, both in the actual game, but also in terms of overall NFL history --- that is, in 2004 the Steelers had much more of a championship rep than we had. So when Brady completed that bomb to Branch (and it occurred just after we stopped the Steelers on 4th and 1, and got the ball back I think), it really felt like something shifted, both in that game, but also in our overall franchise trajectory --- huge moment.
Its sort of hard to imagine now, but at that time we were underdogs to the Steelers, both in the actual game, but also in terms of overall NFL history --- that is, in 2004 the Steelers had much more of a championship rep than we had. So when Brady completed that bomb to Branch (and it occurred just after we stopped the Steelers on 4th and 1, and got the ball back I think), it really felt like something shifted, both in that game, but also in our overall franchise trajectory --- huge moment.