This game is great! And a great way to go back to the glory days when you only cared about was Nintendo. This game was a launch title for the 64, and was arguably the best game for the system. Now you have the chance to pick it up for you DS. With improved graphics, and new stars to get. Since it's been years since you've last played this game, it's worth getting, as there are 4 playable characters now, and each have their own unique stars to get. Also there are some pretty pointless mini games that'll hold you attention for a little bit. However the game does provide a slight distraction in order to unlock them.
This game rarely uses the touch screen if you decide to take the easier controls in my opinion. While the manual says it's better to use the touch screen to control you characters, I find it just easier to use the d-pad, and buttons to control the characters. Using the touch screen makes it fairly uncomfortable to play, and over sensitive.
There is now a way to center the camera directly behind the character, and you can move the camera with the touch-pad. This is a huge improvement.
Overall, this is still a great game, and I advise you to pick it up, or at least rent it. Other games can easily overpower this game in pure greatness now, but this classic can still hold up, and is a great purchase for someone who owns a DS. You'll still have fun with it, and if you haven't played this game in some form yet, shame on you, get this title, and get it now.