I picked up Guitar Hero last week and this game rocks in more than one way. The list of songs is amazing. The game is the inverse of the norm. Usually there are maybe one or two song in a game I like. With Guitar Hero it is the opposite. There are only a few songs that I don't like but I'm will to tolerate them. Guitar Hero includes songs made famous by Pantero, Black Sabbath, Ozzy, Red Hot Chili Peppers, Bad Religion, Blue Oyster Cult and many more. The songs aren't being played by the original artists but just like Karaoke Revolution they sound very close and won't prevent you from getting your rock on.
I have Guitar Freaks and Guitar Freaks 2nd Mix, or whatever they called it, and a Konami guitar. I played Guitar Freaks way too much back in the day and the music wasn't bad but you don't get the same feeling jamming away to music made just for the game as you do when you're jamming to White Zombie or Pantera. It's like playing air guitar, only cooler. Guitar Hero also feels more like a real guitar in that there are five buttons as apposed to the three used in Guitar Freaks. This makes you actually have to move your hand up and down the frets unlike in GF.
This game officially comes out Tuesday the 8th but if you want to try and snag an early copy Best Buy has been selling them since the 1st. The website says it's on back order but if you check store availability you may find one in your area. That's what I did.