I was never a big Klingon fan but he was incredible as the older Jake. he and Cirroc used certain mannerisms so that you actually believed he WAS the same guy.
Avery was usually best when he was faced with real emotions and real situations as oppsed to some Sci Fi treknobabble. "The Visitor" and "Far Beyond the Stars" and anytime he faced Jennifer I thought he was brilliant.
Tony is a neat actor too but i think in Hollywood he's too associated with Candyman and that whole genre to be seen as anything else.
I must confess I cry like a baby anytime I catch "The Visitor" - it affexts me on so many levels - my relationship with my Dad, my relationship with my son, and all the what-ifs that have happened in my life.