I got my picture taken with the following (in order):

Pearl Mackie (from Doctor Who)
She was very sweet! Even took the time to fix my shirt collar before our photo was taken because my tie was making it stand up again, despite me laying it down moments before. sweatdrop

Peter Capaldi (from Doctor Who)
What a wonderful man! Even though I didn't get to interact very long with him (as typical for a photo-op), I could see how great he is. Definitely saw the charming side that River Song sees in the Doctor. wink

Rose McIver (from iZombie and ONCE)
I've gotten so used to her American accent she uses on iZombie that I was a bit thrown off when I heard her use her natural New Zealand accent. Quite a sweet gal and she liked my cosplay.
...and finally...

James and Oliver Phelps (a.k.a. The Weasley Twins from Harry Potter)
Charming guys! And I was shocked to see how tall they were (I'm 5' 9" BTW). In fact, they had to stoop a bit when we did our photo. sweatdrop