I just learned something reading the bio on Wiki about Leach.
I've been following the early days of Gruden, Kiffen and now Leach. All were influenced by the same offense that BYU used in the 90's. Leach graduated from BYU in 1983 and though never played football followed BYU success. Norm Chow was the OC and Mike Holmgren was the QB coach. Lane Kiffin learned from Chow and Gruden under Holmgren at Green Bay.
All three, Leach, Kiffin and Gruden have coached outstanding QB's...
Leach - Tim Couch and Josh Heupel (Oklahoma)
Kiffin - Matt Leinhart and John David Booty (both 3,000 yd passers)
Gruden - Randle Cunningham and Brett Farve (1992 GB)
Mike Leach was the OC under Hal Humme at Kentucky. Humme's offense style was influenced by LyVell Edwards the BYU HC who had Chow as the OC and yes Holmgren as the QB coach.
Of course Lane Kiffen learning under Chow and his dad works under Gruden
Small world after all....