I used to say: 'go to the UK and get Tom Baker's autograph'.
Really. That was top of my bucket list. I have a Doctor Who autograph book full of thirty years of autographs and Tom Baker's was the one I was really missing (I'd met the actors who had played Doctors Two, Three, Five, Six, Seven, and Eight).
Then a family member died and I thought: 'I could go tomorrow and I still won't have done what I always wanted to do.'
So, my Husband and I booked tickets to the next UK convention that Tom Baker would be appearing at, flew over, got the autograph, met the great man, laughed at his jokes and went back home.
I'll probably be paying off that trip for a year or more, but it was worth every moment.

"Pity about the scarf-- Madame Nostradamus made it for me-- a witty little knitter. Never get another one like it--" The Doctor, Ark in Space