I'm decided I'd like to hear some opinions about this band which brought Alternative music out of being...well... alternative music (though they were not the first such band they were the first to be wildly popular). Many, MANY bands that followed have tried to imitate the sound with varying degrees of success however none have matched the Original.
Before I begin outlying who Nirvana was for all those who lived under a rock from 1992-1994 or who, like myself, weren't old enough to really comprehend music, i would like to say the band was composed of singer/songwriter/guitarist Kurt Cobain (Rest in Peace), bassist Krist (latter changed to Chris) Novoselic, and had two drummers (Chad Channing early on and then later David Grohl with whom they became famous).
First, the Album I should start off with is Nevermind as this was the break through album that brought them mainstream success. Specifically the song Smells Like Teen Spirit (Named after a comment made about a certain anti perpraint) which was made famous by its Music video. However, before this Kurt Cobain had started the band with Novoselic and Channing and released Bleach. This Album is less well known then the latter to and is very "grunge" sounding, in that it is almost the antithesis of Nevermind. Bleach is Rough where Nevermind has a glossy surface, cheap and simple where the other is studio-supported and reverbed. Before Nevermind came out David Grohl replaced Channing.
After the Neverminds popularity Cobain became increasingly aloof and dependent on drugs. The next album the group put out was an audience alienation piece, In Utero. It never achieved Nevermind's success. This was intentional. Nirvana put out one more album before Cobain's death and that was the live album, Unplugged. After a UK during which he overdosed on sleeping pills and was put into drug rehab, Cobain was found shot in his Seattle home having commited suicide at the age of 27.
Personally, I love this band. Particularly my favorite album is Unplugged. It is rather haunting and shows that, even without the huge throb of electric guitars, Nirvana was still a great band. It reveal the depth of Cobain songwriting and how sad it could be. It also makes one think of what they might have later become after the fire of youth had settled down. It makes you wonder and think perhaps the group could have gotten better, that it was taken before its time. Or perhaps it left at the right time. So its memory was untarnished. However you see it, Unplugged resonates with some hidden sadness that is buried away in the bands other albums.