One thing that always amazes me is how little people really know about swordfighting. It isn't all strength, in fact a person who knows what they're doing will beat someone who doesn't and can bench-press 200 more pounds 100% of the time.
If you're going to get a sword, take fencing from a sabre master. You won't regret it.
Swords are very, very dangerous as I've learned--I had someone's fencing sabre (which has, by definition, a dull blade to the point of not being able to cut balsa wood) tear a good-sized hole in the kevlar jacket I was wearing (standard equipment for fencers). It also disabled my shoulder for 5 minutes--I couldn't move my arm. Be careful with that thing.
Fun tip: If you're fighting someone with swords (hopefully NOT SHARP and with adequate safety precautions) use your feet more than your sword. You can tell, 90% of the time, how an opponent will move his arm, and thus the sword, just by looking at it. Jump out of the way, and after he's made the swipe at you, jump back in and cut. You'll usually end up hitting him.
Also, keep your eye mostly on your opponent's blade, not his face--it's the blade you're fighting, not the face. Where the blade moves dictates what you do.
Please note, too, that MOVIE SWORDFIGHTING IS TEH FAKINESS!!!!!!!!! All movie swordfights that I've seen, except for one or two, were completely fake--watch the next swordfight you see, pause when you see someone cut or thrust at someone else, and look very, very carefully--would the cut or thrust have actually hit the person if the person hadn't guarded? No? Then WHY THE HECK DID HE GUARD INSTEAD OF JUST RUNNING THE OTHER GUY THROUGH???

These fake swordfights drive me bananas.