A list of Par 5's that have had a major impact on me:
Sandhills #1 - the beginning of a dream come true!
Royal Cinque Ports GC #16 - yes, it is still a five!!! Well, it will always be a 5 to me.
St Enodoc #1 - one of the great "Wow!" moments
New South Wales GC #5 - another great "Wow" moment
Ballyhack #2 - beautiful nearly-freeform golf
Cabot Links #2 - maybe my favorite "brute" par 5. Simply magnificent.
Levin Links #18 - I don't care what the card says!!!
Make a four there and I'll pay for your round.
Dismal River White #18 - it's probably the least difficult of the 5's, but it's the scene of my 2013 5th Major victory!
Black Mesa #16 - stunning challenge!
National Golf Links #18 - the perfect ending to a perfect day