Yes, that's my exact feelings for Cobra. It doesn't live up to the badassness that it offers unlike in great action flicks like Predator, Commado and First Blood, etc. I do love Stallone though, and Tango 'n' Cash is perhaps my favorite movie with him. I do have faint memories of Judge Dredd and though the plot is somewhat bland for that movie I did enjoy the visual settings and special effects and props used. How cool was that Robot villain (I think he's called the ABC WArrior in the comics)?
REgarding Cabin in the Woods I heard that the movie pays several homages to classic action flicks in terms of horror movie ideas.
I will be seeing THe Avengers tonight directly after work so I will post up my review around 4AM Wednesday.