Yeah, good call on Cobra. Totally forgot about that one. I always liked Over The Top when I was a kid, too. I wasn't a big fan of Tango And Cash or Rhinestone though, I'm sorry to say. And Oscar was just plain stupid.

However, I think one of the coolest cameos ever in a movie was in Staying Alive, when Travolta bumps into him on the street and they just kinda look at each other, then keep walking. Most people knew he directed it, but at this time, Rocky and Rambo were both tremendous blockbuster hits and Stallone was a household name. So for him to just be some uncredited "extra" on the sidewalk was pretty fucking cool.
I aint lyin'...