I apologize for the ridiculously long delay in postings, I realize that it's been a while since Restaurant Week ended but I did not forget about the rest of them, so here they are (in slightly less detail) ...
BUTTER (415 Lafayette St.)
This stands as one of my favorite restaurants in NY. Please see previous post on its winter Restaurant Week performance:
http://lyndasays.blogspot.com/2007/05/save-tentative-dates.html. This time I got to sit downstairs (for once, there wasn't a private party goin' on). But, I recommend the mellow earthy decor upstairs as opposed to the more murky chilly downstairs, especially when seated by the wine cellar thing that seems to blow out cold air. Went back recently with some friends from out-of-town; they said they wanted something 'New American', and found themselves properly impressed.
ONO (18 9th Ave.)
So much more about the hip interior, young clientele, and trendy location than the food. Located in the "Hotel Gansevoort" in the the Meat-Packing district, the atmosphere is undeniably awesome (oh, and check out the bathrooms - I think I started taking photos in there whilst in a tipsy stupor). Although the food wasn't impressive this time round (maybe they just didn't step it up for Rest. Wk) , it gets props for some unique sushi flavor combinations.
BOLO (23 E. 22nd St.)
Bobby Flay's take on Spanish food. Cute little place, but I think twas overly hyped just because it's by whats-his-face. It had some interesting things like soup infused with champagne, but the Restaurant Week menu did not impress. I've heard good things about this place though (about being one of the first innovative Spanish restaurants in NYC) so I was kind of disappointed. I'd give it another try maybe with the normal menu someday.
(Update 2/22/2008 - Just found out it closed down, so much for that thought...)