I guess it’s kind of hard to completely call it celebrating because he really wasn’t taunting or dancing, but DeSean Jackson was definitely in error when he released the ball prior to reaching the end zone.
Jackson had just caught a bomb from Donovan McNabb in the 2nd quarter of the Cowboys/Eagles Monday Night game and was cruising into the end zone untouched when he released the trigger too quickly.

Check out this boneheaded play by Jackson:
Luckily Brian Westbrook punched it in after the mistake, giving the Eagles their 27-21 lead so the outcome wasn’t altered.
I’m pretty darn sure that we won’t be seeing Jackson celebrate anytime too soon after that one. Still looking for his first career touchdown, he’s gotta be regretting that mistake.