Sex Lies etc. and Blood Simple are good picks. Maltese Falcon too - I'm surprised to learn that was Huston's debut. La Pointe Courte, on the other hand, kind of bored me, even though I love Varda.
I guess I found both Breathless and 400 Blows underwhelming in general - it's not just that I think they're lesser films by those directors. (Truth be told, most Godard irritates me -Weekend and Pierrot Le Fou are the only things I've seen by him that I like.)
I saw Muriel a few weeks ago and couldn't decide how I felt about it. It's a beautiful-looking movie at least.