The Vikings turned to Teddy Bridgewater in their Week 3 game after starter Matt Cassel hurt his foot, and he wasn't too bad. He completed 12 of 20 passes for 150 yards and ran for 27 yards and, most importantly, didn't turn the ball over.
A lot of good quarterbacks are on bye in Week 4 including Peyton Manning and Russell Wilson. If you find yourself caught off guard and in need of a passer, Bridgewater should fit the bill. He's got a positive matchup against the Falcons at home and will have to throw a bunch. In time I expect Bridgewater to be an effective passer with good players to throw to. Consider him among your waiver claims in the coming week.