Well, I watched all, I think. One ending, Kanade is redeemed and leaves the world whereas Otonashi stays. Isn't it called 'Another Epilogue', a following OVA ? Otonashi stays in the world after death and is school president, same as Kanade was before.
The other end, uhm, yeah another end ? I just read Wiki and it says that they meet in another life, when Kanade sings My Song, that's the other end ? I should probably watch the whole credits...
I rather meant the last fight of the group against the shadows and the resulting redemption. Yes, I loved it, too, but this whole thing with worlds convert into shadow and there is an NPC that does not allow love, Yuri getting mad ( nearly), I just think the whole thing with the creator of the world was exaggerated. The last four (4) episodes were just... completely different than the whole anime before.