I skipped out of work 45 minutes early and caught this, and to be honest I wasn't the hugest fan of the first Underworld.
I thought this was a pretty fun movie, nothing mind blowing or groundbreaking but it definately served it's purpose. There was a lot of gunplay and the action scenes were well done. Lots of cool firearms, Some good UMP, G36, P99, and M249 action in there. I think there was even an HK MP7 thrown in the mix. And the Scott Speedman character, werewolf/vampire hybrid: if you thought he was dissappointing and overated in the first one, like I did ("oooh he's unstoppable! yet, everybody kicks his ass!") you won't be let down this time. All in all, worth seeing I think, but it's not the end of the world if you skip this one. The movie had the typical flaws that most people overlook, but we never can, like unlimited magazines and people flying 50 feet when hit with a 9mm.
One piece of advice. Watch the first one before you go. This movie takes place like hours after the first one ends. I had only seen the first one in theaters and, even though they try to remind you what's going on by using flashbacks to the first movie, a lot of times I was thinking to myself, "who's this guy? What's going on here?"
Let me know what you guys thought of it.