Masters - the year Nick Faldo won on the 11th hole (playoff holes). What an amazing place that is.
U.S. Open at Torrey Pines (2008): just an incredible Open. One of the best ever. Tiger holing that putt on 18 (downhill left-to-right slide on greens that do get bumpy at the end of the day) was the most clutch thing I've ever seen in person.
England Game at Wembley: It was only England vs Hungary but what an incredible setting Wembley is.
Chelsea: various regular seasons games.
I know this is not supposed to include Canes games, but I gotta throw in:
Rose Bowl: Miami vs Nebraska. This was such a special event from the Flyover to start the game (which was poignant at that moment in time) to watching Andre Johnson get open on that 1st TD, the Vilma hits and so many other moments in the grandaddy of them all was special.
Miami vs FSU (OB; 1988): 31-0. Just an incredible performance in the OB. Clinical performance in the season opener (which is a rarety for most teams). One of the best team performances in any sport of all time. Deion who?
Miami vs ND (at ND; 1988): The infamous Catholics vs Convicts game. Driving up to South Bend, I was struck by just how much of a cowpatch South Bend, Indiana is. Well, at least it's not Gary, IN. Yikes. I knew the game would be special though. We unfortunately got robbed on the Cleveland Gary non-fumble. Rocket also ran back a return which was pretty rare against Miami in those days. Our special teams were serious back then. A painful "loss" for sure (and one that was really a victory for us) but a special event to have attended nonetheless.
Miami vs ND (OB; 1989): Payback in the Old Girl. Man did the OB rock that night. An electric night that will never be forgotten. This game had everything. Intense rivalry on the biggest stage in CFB (no other game even comes close to Miami vs ND when both are elite). From the insane 3rd & 44 (gracias to Erickson & Randall Hill) to Tiger Clark's highly memorable INT, this game had it all. The atmosphere was incredible all night long & the good guys won.
As great as the Masters was (and some years it produces indelible moments that are tough to beat), I'll take any of the above Miami Hurricanes games over the other experiences.