Japanese swords / Samurais?

Where can I buy a souvenir samurai / Japanese sword in Tokyo aside from Oriental Bazaar?

You'll find quite a few of the souvenir shops along nakamisedori in Asakusa that sell souvenir swords.

http://www.japan-guide.com/e/e3004.html#nakamise

I agree with yllwsmrf.
Asakusa is good place for traditional souvenir.

Thank you for all your responses! We'll definitely take a trip down to Asakusa nakamise for a great souvenir shopping!!!

If you're going to Asakusa, then there's a better place to buy a souvenir Samurai sword than Nakamise street.

Head down Nakamise right up to the Sensoji temple. Head to the left of the temple and go west to a small covered arcade street. There's a shop on the left that has hand made souvenir Samurai swords. There is a big variety of swords and different fittings. They are more expensive of course, much much nicer than the regular souvenir swords.