Interesting, I've never heard jeep used like that in the U.S. Actual jeeps are pretty common here though.
Another one is "Yonica" for any synthesizer. Obviously "Scotch" (more for the tape, than drink).
But... What I really love is "Pampers" - yes this is the bulgarian word for... "diapers"... and many more...
http://gramota.ru/slovari/dic/?word=%D0%94%D0%B6%D0%B8%D0%BF...