I was going to say, he probably has had to research them because there's some proper typography lovers out there that would of pointed out his errors, he had some others in there originally but had to remvoe as they found out it wasn't Helvetica.
Some of the larger companies have their own font made for them, Natwest and B&Q have their own special fonts, so it is conceivable that companies like Evian, Microsoft and some of the others larger corporates have a font designed for them which has its origins in helvetica. You could say that the "a"s in the national logo aren't true helvetica either, but the fonts will be tweaked a bit for the corporate id. Some of the fonts may be closer to Arial, Berthold or Akzidenz Grotesk (been around a lot longer then helvetica) in some cases.
I think that the kerning on the Mattel logo is terrible, wouldn't have signed that one off myself!!
Really?! The v, i and n may be similar, and the foot of the a does have a Helvetica bold look about it, but the terminals of the e and a are so vastly different that I'm not convinced. One of Helvatica's biggest traits is its terminals.
Strictly speaking its isn't Helvetica in its completely original form- ie: I am sure the designer didn't just scroll through to Helvetica and et voilÃ the logo was done, the typeface has been adjusted as far as I can see.