Thanks to one of the message boards I frequent, I followed a link posted by Rob Ridgell, the assistant organist at Trinity Church (Episcopal) on Wall Street, New York City. Whether or not he would have gotten away with this in a Catholic parish is yet to be seen, but this organ improv, a tribute to the late James Brown and the late Gerald Ford requested by Mr. Ridgell's clergy, is very impressive.
The organ is the Epiphany Opus 1 by Marshall and Ogletree. Their sister company, Marshall Ogletree and Associates is the New England regional dealer for both Rodgers and Fratelli Ruffati organs.
Here's another impressive video on the Opus 1 - Cameron Carpenter gives probably THE most animated rendition of Tocatta and Fugue in D minor by Johann Sebastian Bach that I have ever heard. This is definitely a must-listen (and a must-watch)!
UPDATE: I had just learned by going deeper into the Trinity web site that the "virtual pipe organ" (the Epiphany Organ) is the interim replacement for a pipe organ that was damaged by the ashes of the infamous 9/11/01 attacks.