This might be kind of an odd one, and specific to TV series profiles, but what about some kind of check box or something to indicate whether an actor in a TV series is part of the regular series cast.

This one can get tricky for animated series, though, I suppose.

I'm going to assume that he is referring to the actors that would traditionally be credited in the opening credits of a TV series, as opposed to those that only appear in guest roles or in the closing credits, regardless of how often they appear.

But there are always exceptions to that practice, even on live action shows. Look at Battlestar Galactica as an example...

Michael Hogan, Aaron Douglas, Tahmoh Penikett, and a couple other regular cast members do not appear in the credits, but rather during the opening scenes of Act I when guest stars are listed.

So Skip does make a good point. How do you determine who is a regular cast member and who is in a recurring role definiteively and without enormous debate?

Sounds to me like he wants some kind of checkbox to go with certain actors/roles.  Currently we have "uncredited" and "voice".  In the case of a TV Series, I'm guessing he would like to have checkboxes for "Regular", "Guest Star", "Recurring", etc. to denote the types of roles.

On the one hand, I think it would be interesting information to have (similar to the Uncrediteds) but on the other hand I can certainly say I wouldn't want to have to deal with marking all the various roles.  I can also think the documentation required would be... interesting.

Perhaps an alternate request/solution (and I've given this maybe 30 seconds of thought) would be to allow "tags" on actor/role combinations in a given profile.  We already have tags on a per profile basis, what about tags on a actor/role basis?  Then people could be open to mark them however they like and use it for whatever purpose they want.  I'm thinking this would be a fairly complicated bit of programming and I think Ken has higher priority things to work on, but I can see the value in it for certain users.  One of those cool to have, but most likely rarely used features.  Just my opinion, though.

Yeah, Vega pretty much nailed it.
I was just going through a couple of my TV series profiles, and I thought it would be nice to identify the principal cast, regular guests and special appearances.

I'd also like to see a better way to deal with animated shows like futurama where the cast is identified without trying a particular actor to a specific role.