Parachute Retrospect is the third entry in Kongregate's Buried Treasure week, and it's another jmtb02 production (man, that guy is prolific); like many other jmtb02 games, there's good graphics, a very silly premise, but one which provides solid gameplay, and not a lot of depth.
The basic premise is very simple: you have a helicopter, and below you, trucks pulling trailers full of hay (or possibly cotton) pass by. When you click, a person drops from the helicopter and hopefully lands in the load of hay. If this reminds you of the Mac classic StuntCopter, then you're not alone -- that was my first thought as well (and I was pleased to see in the comments that I wasn't the only one who recognized that premise, too). However, unlike StuntCopter, which adds difficulty by changing the wagon speed and gravity, Parachute Retrospect adds a much different degree of difficulty -- for every five people you save, a nasty anti-person measure is added; you'll have to deal with (among others) missiles, lasers, and trucks which have inconveniently decided to carry a load of spikes rather than soft hay; by the end of the game, you'll probably be killing more people than you save. Fortunately, the game is quite generous with lives, giving you 99 in all. (Another important difference is that you can drop multiple people at once, which is definitely helpful in the later game to make the most use of the often narrow windows you get. Of course, if you mistime, it's also a very quick way to lose a bunch of people at once.)
After you save 50 people, the game shifts to an entirely different mode -- now you're a helicopter which has to rescue people being dropped out of some...thing. This part of the game really doesn't make much sense, and it kind of feels tacked-on; I can't help but feel that the game would be better without it entirely.
The graphics are pretty simple (and, surprisingly, star-free), and the sounds are quite basic. The music is not bad, and definitely lends an air of excitement to the proceedings, although you'll probably get tired of it after a while. Overall, this is a silly little game, and it can be surprisingly frustrating -- in the later game, it's quite difficult and you'll have to do a lot of waiting for the few moments that the coast is clear. Still, it's short enough that you're going to finish it before you run out of fun.