I challenge every person who has "mocked" this list to sit down and look through each Collectormania/LFACC list, and also those run by other organisations, and honestly say which guest they were suprised turned up.
James Marsters and Carl Weathers come to mind immediately.
My case is not rested yet, but those are my opening arguments.
Acting talent and film companies have product to promote. They do press junkets etc and meeting the fans over a weekend can shoot a film or tv series through the roof. It is all about money to film companies and alot of acting talent. Acting talent need to provide for families, life styles and pensions. By promoting films/tv series and making them bigger allows them to shoot for bigger roles which mean bigger paydays.
Having met some of the list above and seen interviews etc, I do not believe these people are unrealistic.