Fear nothing but what thy industry may prevent; be confident of nothing but what fortune cannot defeat; it is no less folly to fear what is impossible to be avoided than to be secure when there is a possibility to be deprived.
Several of the actors I've had the good fortune of working with stand out in my mind as 'ultimate'. I guess the obvious would be Tom Hanks, because he really is as fun and as genuine as he comes across in his films and interviews.
I'm one of those fortunate actors who gets to work pretty much every day. I've had a run of good fortune and work with some terrific people who have hired me.