Best Game: Dallas defeating Philly in the playoffs of the 92-93 season. We'd split the games with them that year (They beat us in the early one on MNF and really beat us pretty badly), and they were all talking, especially Andre Waters, about how Dallas was still afraid of them cause Dallas knew that no one put it on them like the Eagles did.
Going out there, that day, and not only beating them, but just beating them down, was beautiful. Still my favorite memory.
Honorable Mention: Halloween Night, or in that area of the year, in 1993 when Emmitt Smith beat the crap out of them for like 200 yards in route to getting back into the race for the rushing championship after missing the first 2 games.
Worst: This one is tough. There are so many. The 4th and a foot x2. The 24-0 beat down they put on us in like 1990 when they sacked Aikman something like 11 times. The before mentioned MNF beat down they put on us in 1992 (I think they won 34-7 that night, or something like that).