As good as it gets
What more can I say about San Andreas that you didn't read anywhere else?
The Game is as good as it gets, GTA 3 blow me away when it came out and I thought that Rockstar couldn't do much better than that but I was dead wrong first with Vice City and now with San Andreas.
San Andreas is everything it's predecessors were plus more, The level of interaction is equal to none, you get plenty more of side missions, the state of San Andreas is huge and very well designed, the missions are more scripted and there are so many different aspects in this game that probably you'll come back and replay it just to see what you missed.
The voice acting is great to a degree were you believe you are watching a movie more than playing a game, the radio stations are always a plus in GTA games and this time they are interactive to what happens in the game.
The plot is good and with some nice touches that keep you playing to see how things work out.
Unlike most new games it doesn't rely on graphics only to keep you playing.
There are (in my humble opinion) a few things that Rockstar should improve for the next game of the series :
The food system is rather useless, I finished the game having only 3 or 5 meals and never because the game told me to.
Some missions seemed weird and forced into the plot, I don't want to put any spoilers here but there are times when you are doing things that don't have any logic or sense and make CJ look more like James Bond than himself.
The Bottom Line
If you liked GTA3 and Vice City you probably own this game already, if you didn't play the other games I suggest you play them in order since the plot in San Andreas has characters from the previous games.
GTA San Andreas is a game you must have at least to be able to cruise around the most amazing virtual city to date.