You should remove the spoiler in your post, IMHO.
I saw this movie Saturday and really liked it. The visuals are absolutely gorgeous -- it's worth seeing in a theatre. The transit of Mercury scene is going to be a classic. I loved how they used contrasts between light and dark to parallel the hot/cold in space (there is no heat convection in space, so it's either bitterly cold in the shade of the shield or super hot from the solar wind radiation, with nothing in between). I also liked how the actors didn't wear makeup, it made it seem very realistic. Some good performances. I actually liked the ending too... I don't think the plot was the issue, I think the only problem people have with the movie comes from the editing being incoherent and unfocused near the end, not necessarily because of the plot twist. They shouldn't have cut some of the dialogue near the end because it would add character motivation (the line "nothing will survive, not your parents, not your children, not even stars" in the trailer was cut from the movie, suggesting there is more that was cut). I would have liked to see it with an extra 20 minutes or so.
Still, great movie, and worth the money.