There are very few actors who never have an 'off-day.' The advent of IMDb.com gives everyone the opportunity to double-check their own memory, but while I haven't seen his entire body of work, John Turturro is one of those guys who I just can't imagine doing something bad. In a recent appearance on "Monk," a show I don't watch, Turturro was amazing (as was Tony Shaloub.)
Other ones that are always great, at least to me, are John Cusack, Kevin Spacey, and Cate Blanchett. I hope Alex Belth is reading this and comments on Turturro.
Speaking of movies, does anyone else here play HSX?