I've never watched Two And A Half Men, so I don't know who is who. I've just seen previews or whatever. Anyway, I am wondering if anyone can tell me if one of the guys on the show is "Ducky" from the '80s movie Pretty In Pink.

Yes, John Cryer/Alan was "Duckie."
OK, I knew he looked familiar..... just wasn't sure.
He was and still is a cutie.