Mahesh P.
Google
Stellar, stellar sustainable sushi. A surprisingly inexpensive Omakase joint (ok, "inexpensive" for Omakase in NYC) the place is equal parts labour's of love, intimate sushi establishment a-la Japan, and guided tour to sustainable fish.
Jeff - the sushi wizard - concocts little unexpected miracles with each mouthful, and TJ - the manager - takes care of the guests in a friendly and unobtrusive fashion.
I could go on, but I won't, except to say that you really, *really* should go check the place out. You won't regret it...
Update: Been back there post (excellent!) NewYorker review, and, if anything, it's even better than before...