The Ravens are the only team in the NFL to make the playoffs in each of the past 4 seasons and they are just one win away from making it 5. To clinch at least a wild card berth the Ravens only have to win one more game. Win this weekend and the Ravens are in the playoffs.
More interesting, the Ravens have a chance to clinch the AFC North title this weekend as well. A Ravens win coupled with a Bengals loss would give the Ravens the division. Based on the fact that even if the Bengals won out and tied the Ravens overall record, the Ravens would still finish 5-1 in the division(losing week 17 to the Bengals) and the Bengals would be 4-2 and would lose the tiebreaker.
Steelers games are always huge, but the ability to beat the Steelers to clinch the division is a pretty juicy idea, doing it week 13 is even juicier.