I greeted them and did a double take.. and then apologize for staring... and said "im sure you hear this all the time, but you're the spitting image of Charisma Carpenter" to which she smiled and responded "because I am". She introduced herself and shook my hand and went browse.
I geeked out for a second while she walked around and then she came over and talked to me about comics for a bit. Very sweet lady. Not something that happens around here every day.