Anthony Peck Signed For Final Season of LOST?

Carlton Cuse just sent this twitter message:

Damon and I are die hard fans of this impeckable actor who keeps the barr high and just signed to guest star on the show. Life is good!

And a little later:

Yes, its a clue.

My guess?

Pick out the obvious: “die hard”, “peck” and “barr”.

Any actor fit that? Anthony Peck. He was in Die Hard (as “Young Cop”), and right before doing that, he was “Mr. Barris” in “The Bronx Zoo”

Any one else have a guess?

Edit:

BZZZ…. Time’s up, and I was wrong. Thanks for playing, kid, here’s your consolation prize. The answer was William Atherton.