This is easily one of the best shooter/adventure games you can play.

User Rating: 10 | Metroid Prime GC
Making her debut on the GC, Samus brings with her an incredible game.
To start, the adventuring is a big part of the Metroid series, and there is plenty of it in this game.The regions you travel through are huge and beautiful. You will never get bored looking at some of the breath-taking scenery. The music that plays, while big, keeps you company as you travel back and forth solving puzzles. The controls are solid, and you never have to worry about getting stuck. The bosses are ugly and huge, with awesome battle music. Plus, awesome weapons to blow them up.
....The only thing I can think of that isn't real good in this game is the music, traveling back and forth, and the fact that it can get really quiet since NO ONE breaths a word.

GOOD> Controls; bosses; adventuring mixed with shooter action; locales are incredible

BAD> Music isn't all that good; traveling back and forth is a bit of a hassle; creepy quiet, since nobody talks