Still a favorite ride of many, Alpengeist at Busch Gardens Williamsburg was a really big deal when it opened, both figuratively and literally. The B&M designed inverted coaster was the tallest of its kind when it opened, and I do believe B&M have not done a taller inverted ride since.
You'll have to click this one to see the details, but here is a fact sheet for the coaster, also released with the press materials. It gives a bit of the back story of Alpengeist which includes a "mysterious snowbeast" and a "blizzard of fright." This is the only time I've heard a flat spin described as "similar to flipping a pancake!"