Two come to mind and do every year.
Watching what used to be the season opener at Kapalua while looking out my window at winter scenes always made me wish I was there. The other is the Pebble Beach Pro Am. Often wished I could play those 4 courses with the pros and celebs.
I'd have to go with the WGC Match Play. For me nothing beats playing in a match play event. I do wish it was still a 64 person bracket instead of pool play to start but I totally understand why they made the change.
It would be either the Bay Hill Invitational or Memorial at Muirfield. Both are great courses and the men behind each are legends.
It would have to be the AT&T ProAm at Pebble Beach...playing a glorious course with all those legends of golf and beyond would be amazing.