*chuckles* Sadly, there wasn't much of a conversation. I went to Dragon Con (as stated here) and he was the reason we went in the first place so we went to all the panels he was in. I went through his autograph line twice (once for me, once for a friend) and above the guests there was a sign reading "No Personalized Autographs" and when I got up to him his first question was "Who do you want me to make it out to?" *laughs* I was dumbfounded for a second because I was thinking "I thought it said no personalized autographs" but then I was like "My name's [Redd]" (which, obviously, I said my real name there) and he started trying to spell it out loud which was really cute. I had to correct him on the correct spelling and he goes "It's always the one you don't think it is, innit?" XD I also asked if he wouldn't mind if my girlfriend got a snapshot of him there since she'd been trying to get good seats at the panels without much luck and I knew she wouldn't ask him (because she didn't just want to flash the camera in his face XD) and he was like "Sure!" which is where that picture came from :)
The second time was much better since I knew he was personalizing them (and it was the second day, too) and I got up there and said "Sorry, me again. But I had to get your signature for a friend of mine. She adores Ianto." And he just chuckled and said "Don't we all." He signed it and handed it to me with a wink and said "Thanks, sweetie." And I promptly turned to mush. *laughs* He's really a sweet guy.