1. Cowboys - Redskins: The Cowboys and Redskins have hated each other since the series began in 1960 and the rivalry has blossomed into one of the greatest in sports. The two franchises have won eight Super Bowls combined and even in the rare down years, each has given the other trouble. There are too many great games to list, but this year's Monday Night thriller, in which Washington shocked Dallas with a come-from-behind 14-13 victory, has to be among them.
2. Packers - Bears: The NFL's oldest rivalry has maintained a level of hatred since 1921, when the Chicago Staleys (the franchise that evolved into the Bears) hammered the Packers 20-0. Over 50 Hall of Famers-to-be have played in this rivalry, in which the Bears hold an 85-78-6 edge.
3. Chiefs - Raiders: These former AFL powerhouses, both of whom have rabid fans, have been going at it for over four decades. The rivalry hit a high Ã¢â‚¬â€œ or a low, actually Ã¢â‚¬â€œ in 1970, when the Raiders' Ben Davidson speared Chiefs QB Len Dawson in a play that ended up costing Kansas City a key late-season game.
4. Eagles - Giants: The intensity of this rivalry can be summed up by two plays: Chuck Bednarik's vicious hit on Frank Gifford in 1960 and "The Miracle at the Meadowlands" (Herman Edwards' return of a Joe Pisarcik fumble for a key win in 1978). The Eagles ended up on top in both those games, but the Giants have gotten in plenty of licks over the years.
5. Steelers - Browns: The original rust-belt rivalry, these two teams have a long history of not liking each other. The cities are separated by fewer than 100 miles and both have incredible passion for their teams. The Steelers had the decisive edge in the Ã¢â‚¬Ëœ70s, but the Browns stormed back in the Ã¢â‚¬Ëœ80s. When the NFL returned to Cleveland in 1999, Pittsburgh was the Browns first home opponent. The Steelers won that game 43-0, but the Browns got their revenge with a shocking 16-15 win in Pittsburgh.
6. Broncos - Raiders: The rivalry got going in the Ã¢â‚¬Ëœ70s, when the Broncos had to beat the consistently excellent Raiders to enter the upper echelon of the AFC. The teams hated each other then and things have only gotten worse. The hatred between Broncos coach Mike Shanahan and Oakland's front office is legendary. Raiders owner Al Davis not only fired Shanahan, but also allegedly refused to pay him the remainder of his contract, starting a feud that is still among the NFL's best.
7. Packers - Vikings: The Packers were not very welcoming when the Vikings entered the NFL in 1961; Green Bay dominating the series early. But then Minnesota took off under Bud Grant as Green Bay suffered in the post-Vince Lombardi era. The series has been marked by close games, with both teams taking turns dominating the division over the past decade.
8. 49ers - Rams: This was an all-California rivalry for years, but it's never laid back. These teams seem to alternate being powerhouses. The Rams dominated the NFC West in the 1970s, the 49ers owned it in the Ã¢â‚¬Ëœ80s and most of the Ã¢â‚¬Ëœ90s, and the Rams came back around at the turn of the century. Both teams tend to measure their success by how they're doing against the other.
9. Bengals - Browns: Who can forget when Bengals coach Sam Wyche yelled into the PA system at a rowdy Cincy crowd, "You don't live in Cleveland." The Bengals were actually playing the Seahawks in that game, but who can blame Wyche for taking a swipe at his Buckeye rivals. Both teams had Paul Brown as their first coach, which helped get the rivalry going when the Bengals entered the league in 1970. Although the teams have struggled lately, they both appear to be headed in the right direction and should pick up the intensity in coming years.
10: Dolphins - Jets: Even though South Florida is loaded with former New Yorkers, there's no love between these teams. The key moment in the series came in the 1982 AFC Championship game, when the Dolphins let their field soak in a pouring rain before knocking off the Jets 14-0. Other great games include Dan Marino's "fake spike" in 1994 and New York's famous 30-point fourth-quarter comeback in a 2000 Monday night game dubbed the "Midnight Miracle."