Sheikra, Busch Gardens, New 2006. Highest vertical drop coaster in world at that time. (Now surpassed by Griffon at Busch Gardens, Virginia. We rode Griffon on August 31st this year, stunning coaster) Sheikra holds you stopped on the edge, a long 4 seconds
Found it on internet 6 months before holiday, looked forward to it for 191 days.