So we made it through the Yomim Noraim without hitting the trifecta. First time in years. The trifecta consists of three semi-recent melodies that are invariably used by chazzanim (usually for kedusha); Machnisei Rachamim, Shiru Lamelech, and Ein Aroch.
Update: 12/23/05
Couldn't make it through the whole season, though. We got the third one at Musaf yesterday. (We'd gotten the other two on Rosh Hashana and Yom Kippur.)