Great thread! In the spirit of keeping things short, I'll stick to 5, in no particular order...
1. 1st Tee at The Old Course. Easiest and most nerve racking tee shot in golf.
2. 1st Tee at Merion East, followed by holing out a SW from 100 yards for an eagle 2 on the 8th hole, then making birdie on #11 (God's Hole)
3. Ripping a 3 hybrid to 10 feet behind the hole on the 244 yard 11th at LA North, missed the putt though
4. Rolling in a 30 footer for birdie on #1 at Oakmont in the SWAT
5. 18th Tee at Seminole. Realizing that my day there was coming to an end was sad, but reflecting on what a day it had been, was thrilling!