The original ending didn't go down well with test audience, as Jennifer Aniston fans found it upsetting. As a result Universal Pictures had to re-shoot. According to the Chicago Tribune, the first ending made basically the same point in a slightly different way.
When Brooke is complaining that Gary only brought back three lemons instead of twelve, if you look closely at the bag there are actually four lemons in the bag.
When the exterior marquee sign for the Riviera is first shown close-up, all the little white lights beneath the title are working perfectly. Then, in the very next shot, when it's shown from a little further away, an entire section of marquee lights is out.
When Gary walks into the apartment with the grocery bag (before the dinner party) the bag starts out standing up on the butcher block. In the next shot it's folded up and the mixer's missing, then the next shot it's folded up, laying down on the other side of the mixer.
Brooke: I just don't know how we got here. Our entire relationship, I have gone above and beyond for you, for us. I've cooked, I've picked your shit up off the floor, I've laid your clothes out for you like you're a four year old. I support you, I supported your work. If we ever had dinner or anything I did the plans, I take care of everything. And I just don't feel like you appreciate any of it. I don't feel you appreciate me. All I want is to know, is for you to show me that you care.