The biggest games, of course, are Washington and Philadelphia. If both lose, even a Cowboys loss to an NFC team (NY) is sustainable. Other obvious ones - cheer Denver over Carolina and Arizona over Minnesota.
The TB/Atlanta game is a little bit of a wash. Yeah, we own the TB tiebreaker, so you'd suspect we'd want an ATL victory, but with the remaining schedules and the scenarios they create, it ends up being more complicated than that.