Best movie of the Underworld Trilogy. It has an R rating but I am not sure it really deserved it. I have seen more blood and guts on the Sci Fi channel's Saturday B movie night. The brief love scene is very tastefully done, yes the couple is naked but you only see side shots. No breasts, no buttocks. Not too much kissing, no humping. There was also no swearing, the F word and the S word were never used so why the R rating? Yes I would take a kid to see it (10 and older). Nowadays most kids have seen worse on CSI or in video games.
One comment I heard from other audience members: they felt that the final battle scene reminded them very much of the Battle for Helm's Deep in the Lord of the Rings trilogy,except you want the "trolls" (in this case werewovles) to win.