That was a great team. The only real difference between '88 and '89 was the location of the Miami game. Unfortunately for the '89 team, playing them at night in the Orange Bowl (where Miami hadn't lost in years) was tougher. Miami was also out for revenge. Fortunately, we did get them back in '90 though, to close out the series.
My first ND game in person was the '89 SMU game. 59-6 and it could've been a lot worse. Ricky and Rocket both ran back punts/kickoffs for TDs, although one of them got called back (Rocket's, I think). SMU was really bad, having just come off the death penalty.