The whole Cuba sequence is as good as anything in any Bond film. The rest of the movie... well, it's okay, I suppose.
It really isn't just nostalgia.
I saw this in the theater when I was ten. I didn't know anything about genres then, but if I had, I would enthusiastically have said that this set the standard for action/adventure films. Watching it now, more than thirty years later, it is still the standard. It has simply never been equaled. There's not a casting choice, not a plot development, not a line of dialog, not a single frame I would change about…
I love Jackie Chan, but you know what I don't love? Watching Jackie shoot people. That's not what his movies are for. This one has a pretty good fight at the end (Dick Wei is always worth seeing, and always seems to bring out Jackie's best), but otherwise this is just a movie about Jackie and his developmentally disabled brother, and when there is action it's almost exclusively gunfights. Very disappointing, considering it's Jackie and Sammo Hung right when they were both at their peak.