Unsung Rambo
I know it's derided and it always comes up last in most people's "rank the Rambos" threads, but dammit it all to hell -- Rambo III is my favorite Rambo, and I'll tell you why.
I like this precisely why others dismiss it -- it's just an over-the-top '80s action movie, of the type that will likely never again be made...R rating, intense violence, huge budget, no melodramatic garbage, no "teary eyed moments" for the ladies which are mandatory in all "action" movies these days. The final 35 minutes are nonstop action and the scene with Rambo against the Spetsnaz commandos in the cavern is my favorite Rambo moment ever. I don't understand why this movie bombed and why it is still criticized: Stallone gave audiences exactly what they wanted -- a big dumb action movie.
In a way, I'd say this movie is Stallone's "Commando." Most would say that "honor" goes to his 1986 film "Cobra," but I'd say Rambo III is more in line with that Schwarzenegger classic...it takes itself a bit more seriously (true to Stallone form), but those final 35-40 minutes of action are equal to the finale of Commando.
I think it's a shame the film flopped. If it hadn't I bet we wouldn't have had to wait 20 years for a 4th Rambo.