I'll be the first to admit that Treat Williams has been in some utter rubbish. Half the time stuck in dreadful "B" movies when he deserved so much better. On the rare occassion he's been in a decent movie like Things to do in Denver when you're dead, he's out classed even good actors like Christopher Walken.
With Everwood he got the break for playing the usual wise ass joker type he's been sterotyped as. Showing a full range of emotions from grieving husband to funny dad, he's shown anyone who watched the show what a first rate actor he really is.
Lets hope in the future he is offered more material like this!