This was a long time ago, but I bought a Dell with Ubuntu while visiting my parents in Oregon, and took it back with me to where I was living in Innsbruck, Austria.
The hard drive (I told you this was a while back) died on me. I called up Dell, and expected some nightmare of having to ship it back to the US where I'd bought it and waiting months and who knows what.
But what actually happened was some guy showed up at my door the next day with a new drive and swapped it out.
I was so impressed.