Vlingo +10!
I'm really awkward by voice dictation stuff... pretty much any singing game NOT called Rock Band 2, I do pretty bad on (Rock Band 2 has really exceptional vocal tracking, vs. the competition, at least) but on the computer... Never had good luck. Even the Google voice search, pretty terrible.
Well, I just ran a quick test at it. I said "Email Jennifer Subject Testing Message Testing 1 2 3"... it asked me who "Jennifer" was (my wife), only one contact, I just had to click her email... and it filled it in. 100% accuracy. I discarded it, and said a bit more. I didn't have a script ready, so I stammered a bit, and that broke its accuracy... but I'd still give it 95% accuracy.
If I had more use for text-to-speech on my phone, this would be worth ten bucks. Being free I'm glad to have it, but if it had cost anything, I would have probably passed. Thank you for bringing it to my attention (well, via this topic).