where would 你 go to find out about public appearances of 迷失 cast members??

Well right now the cast is pretty busy shooting the 6th season and the rest of the time they're probably busy with personal stuff 或者 other work.

You're best bet is to scope out some big media conventions (comic con's and the like) and see if a cast member is doing a public appearance 或者 a panel on a 显示 或者 movie they're doing.