Might I suggest "Predator"? Yes I might.
Another thing that Rifftrax does is some shorts. These things are hilarious and well worth the few bucks they cost. Once again I have a suggestion. Goodbye, Weeds. In this short you learn valuable lessons. Like did you know there was a product that makes weeds commit suicide? Yep. Don't think too hard about it.
Plus this week there is a encore of their riff of "Starship Troopers" on the big screen near you! Go. It is well worth it. In October they are rocking "Night of the Living Dead"!
So grab some beer, curl up on the couch, and watch some awesome. Tell them F'ing Monkey sent ya. They will have zero idea what the hell you are babbling about!