Gundam Wing is one of those shows that you look back on today and realize just how kickass it was. Excellent animation for its time, great characterization, and a very well thought-out war story.
The story can be a tad hard to follow, but it's very rewarding and has enough twists to make even the most diehard TV watchers go "HOLY ****" at some point.
The combat, however, is where Gundam Wing's strongest point is, and it delivers in spades. From mecha fights, to gun combat, to even a couple of sword bouts, this one is a great show of conflict.
The characters, which include the legendary Heero Yuy, Duo Maxwell, Treize Khushrenada, and Zechs Merquise (this series' Char Aznable), are all very well-acted and thought out. Fans of the Gundam franchise may prefer characters like Ray Amuro or Char Aznable, but I like this cast all the same.
If you're a mecha fan, you should watch this. And even if you aren't, try it out. You won't be disappointed.