Internet Movie Database
Click here if you can’t remember what movie you saw but remember the actors in it. Great for cross-referencing actors and titles. And you can become a critic and publish your review here too! Unfortunately, the films you see on your TV seem to have their cast lists struck, or rendered unreadable in favor of a commercial or promo, and shame on the cablers who do this, yes, you HBO and TCM and FMC and AMC and etc. etc. And shame on the unions for not trying to do something about it.
http://www.imdb.com/
You will also find Lynn Redgrave, and please remember that I had a hand in virtually all of her credits over the space of 32 years.
You will even find John Clark if you want to look at his skimpy credits.