> I would be really impressed if they had a commercial spoken in Esperanto
Not sure if you’re referring to Jack-in-the-Box, or any company in general. If the latter, Michael Jackson’s HIStory promo video, a form of advertisement, had its spoken dialogue done in Esperanto (see http://www.youtube.com/watch?v=qlpTFa-wGc4 ). A commercial done by Littlewoods Direct of the UK uses a sort of (incomprehensible) pseudo-Esperanto (see http://www.youtube.com/watch?v=qhIJH56YIWE )
> Esperanto is… a really cool language too. Too bad it never really took off…. I’d learn it.
Actually, it has taken off. At about 2,000,000 speakers scattered around the world, and almost 125 years old, it’s perhaps not high-altitude flight, but it’s definitely sustained flight – and it’s rising. If you’re interested, http://www.lernu.net has great free self-study learning resources, including courses of varying levels. http://www.ikurso.net also has a free multi-media beginner’s course.