As for letting who they are as a person influence my decision? Nah. Most celebrities seem like troutty people. But I don't follow the tabloids, so I really don't care. Unless they've done something really, really bad (like, I'm probably never going to enjoy The Cosby Show again, or 7th Heaven after finding out the guy who plays the reverend is a child molester/rapist).
I hope you're not a fan of Ferris Bueller's Day Off!