Amid the din over the stellar performance of QB Michael Vick this season, a simple point has been overlooked: The Eagles' offensive line remains a unit with something to prove. If Vick can sling and scramble anywhere close to the way he did against the Redskins in Week 10, the line's performance might be of ancillary importance. But performances such as that are rare, and our team observers expect the line to face some serious challenges soon, starting with the Giants' talented defensive line in Week 11. The depth is not an issue; injuries at four of the five starting spots have not killed the team as one-time reserves Mike McGlynn, Nick Cole and King Dunlap have done an admirable job as replacements. The problem has been the lack of dominance up front, which might be strange to say given the offensive explosion at times. But other than OLG Todd Herremans, who has been strong, the Eagles have not received exceptional, dominant blocking up front on a consistent basis. As the weather gets colder and the opponents get better, this will have to improve — even if the QB is playing at a superhuman level.