High tech: Hewlett-Packard, Apple, Dell, Sony, etc.

Automobiles, someone has already mentioned

Banking: Chase, Citigroup, etc.

Food: I'm not sure who all the parent companies are and who owns what, but...: Pepsi, Nestles, Nabisco, Campbells (hey, there's a Scottish one! ), etc.

Disney has international businesses, as well, but they've also been done a lot.

Airlines.

Tesco from the UK has started opening stores in the US...how is that going for them?

Good luck!