Rueben Randle looked up the other day during training camp practice and spotted on the sideline what he admits was an NFL receiver’s all-time snapshot. He saw Plaxico Burress talking with David Tyree talking with Mario Manningham, a three-way conversation that got Randle dreaming. “You’re going to think about it, it’s just part of the game,’’ Randle told The Post. “You imagine yourself making those plays since you were a kid. It’s all about going out there and getting it done.’’ All fans of the Giants recall with great glee “those plays’’ Randle refers to. Tyree’s leaping catch of a football pinned on his helmet is the signature moment of Super Bowl XLII and, coupled with Eli Manning’s escape-job scramble, will live on as one of the most memorable and improbable plays in NFL history. The remarkable play set up Burress’ game-winning touchdown catch as he toyed with Patriots cornerback Ellis Hobbs, breaking so wide open the pressure was on Burress not to drop Manning’s perfectly-lofted 13-yard pass for the game-winning points with only 35 seconds left.