Top Gun is a classic 80's movie, with everything you would expect from this period of movie making. Cheesey drama, classic one-liners, lots of montages, uncomfortable love scenes. Clearly, the above reviews (watched in the year 2000) have taken this movie way out of context, and have no clear concept of the 80's genre, especially from a pop-culture stand point.
Top Gun was the first movie that featured cooperation by the US military on a grand scale. It spawned a new wave of Ray Ban wearing wanna be pilots with short cropped, spiky hair. Top Gun has become a cultural classic for anyone born in the 70's and 80's, and more.
Watch it. Don't expect it to be realistic...80's cinema was a different experience than it is today.