2017-18 Champions Classic had #1 Duke taking on #2 Michigan State, and #4 Kansas against #5 Kentucky. The Classic showcased 6 of the top 12 picks in the 2018 Draft (Bagley, Jackson, Carter, Knox, SGA, Bridges).
2014-15 Champions Classic had 3 of the Final 4 Teams. 7 of the top 15 picks in the 2015 Draft played in the CC (KAT, Okafor, Cauley-Stein, Winslow, Lyles, Booker, Oubre)
2013-14 featured #1 Kentucky against #2 Michigan State... #4 Duke vs #5 Kansas was the other matchup, which happen to have the first 3 picks in the 2014 Draft (Wiggins, Parker, Embiid) as well as 8 total first round picks (Randle/Young-UK; Payne/Harris-MSU; Hood-Duke were the other 5 first-rounders).
2011-12 Champions Classic had Kansas against Kentucky; both teams advanced to the National Championship game.