[vin17]

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Anyone play local co-op? It projects it in 4:3 on my widescreen. Anyone know why? Black bars on the side are annoying.

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Are you playing co-op with 3 people when this happens? If so, I believe it's necessary in order to prevent picture distortion.

If not, then your 360 might be configured for 4:3 and not the 16:9 which you obviously need. You can change it in the dashboard.

Also, if you got the Limited or Legendary edition, try using that video calibration tool on the Essentials disk.