I think it's a classic.
The production style changed the industry. Dre (and the other producers that contributed) came with serious fire, EVERYONE was talking about this album and bumping it at the time, and I remember being in a car full of people with the album bumping and everyone knew every word to every song. Think about how many big songs there were on this album (and this is off the top of my head, because someone stole mine

)
I remember when the instrumental mixtape leaked too, all the rappers I knew were hyped and dropping bars on like EVERY beat.
In Da Club
P.I.M.P
Heat
What Up Gangsta
Blood Hound
21 Questions (you know that fat kid line was the LOLz for ages)
Many Men (Wish Death)
If I Can't (there was that sick remix with Jigga too from his Reebok mixtape)
Back Down
Patiently Waiting (although Eminem murked the track)
Listen, I'm not a massive fan of Fifty, at least not anymore. If all he had done was "Power Of The Dollar" and "Get Rich Or Die Tryin" then he could do no wrong in my eyes. Shame he had to fall off so fuckin hard.