Sadly, Erin reports that no time travellers showed up at the Time Traveler Convention (the NY Times article on the convention is here), although she did have this experience:
The other big highlight of the bouncing duties came when “Theodore Logan” claimed to be from the future. Even with the Keanu Reeves getup he was wearing, at first I didn’t process the joke. I asked him to prove it. “Wyld Stallions!” he said.
Heh. I wonder if anyone came in a Tardis?