SI's Stewart Mandel has issued his highlights and lowlights of the college football decade, like player of the decade (Tim Tebow) and biggest upset (Appalachian State over Michigan, 2007). In his "awards" he named Utah's Kyle Whittingham vs. BYU's Bronco Mendenhall as the coaching rivalry of the decade. Both hired in 2004, Mendenhall owns a 3-2 series lead, but Whittingham has the only BCS bowl appearance and victory.
Mandel also named the Boise State vs. Oklahoma in the 2007 Fiesta Bowl as the best bowl game of the decade. Click the title link for full article, a fun read to re-live the decade in college football.