Vlingo - Voice command app for Nokia 5800 & Nokia N97!

Instantly send a text or email message, call a friend, search the Web, create a "note to self" and more by speaking to your Nokia smartphone.

It's darn accurate on commands as long as you don't say something totally out of the blue. I was very impressed as to how easy this app made Voice commands effective.

Get a preview of it's abilities here: http://www.vlingo.com/products/nokia/

Best of all, it's now available free for the Nokia s60v5 phones!

Download here.