As
@PolyRob stated it's a roller coaster manufacturer. Before I became obsessed with Disney and
DVC, I was a roller coaster nerd and still am. I just picked up 6 credits at SeaWorld Orlando yesterday

. But the one that started it all for me was Top Thrill Dragster, I was obsessed for awhile watching music videos of Dragster and Cedar Point until I finally flew out to Ohio from the West Coast just to go to Cedar Point.One of the best things I Did while I lived in Ohio was drive the 10 hours from Columbus to New Jersey to ride Kingda Ka which
WAS a 456 foot, 128 mph ride manufactured by Intamin. Loved every second of it. Ended up getting 5 rides on it in one day, 3 of them in the front row consecutively (the park was extremely dead).
The most notable coaster at Disney is probably incredicoaster that they've made but some of my other favorites are Hagrids and Velocicoaster at Universal both of which are Intamins. Intamin rides are known for having poor reliability and unfortunately long waits, however the ride experience itself IMO is usually worth it and I love that they're always pushing boundaries (see Falcons Flight).