Here’s an interesting website dedicated to particularly egregious key changes called the "The Truck Driver's Gear Change Hall Of Shame."
Greg agrees with this characterization of modulation, but Steve thinks that key changes are cool.
Personally, I think that interesting key changes can add a lot to an arrangement, but I think that the technique is overused and often poorly done, on many of today's jewish music recordings.
Via Instapundit.
UPDATE:
An example of a "gear change" key shift on a Jewish tune can be found in the arrangement of "Kein Yehi Ratzon" on The Chevra's debut album.
