Eh, I'm of two minds on A:R. If I just take it for what it is - a straight up action movie with space monsters, it wasn't half bad. I actually thought Ripley 8 had potential, and her and the ugly dude would've made an interesting couple.
If I try to take it as part of the series....well, man does that suck. Aside from requiring suspension of disbelief stetched way far beyond what I was willing to (especially considering that the 'we don't add ray guns for no good reason' was what I liked about the series in the first place), it just didn't work well. No WY, and it's missing the human aspect that helped the other movies out so much.