Yep, Kahn's rocks. I can't go there too often. That Reuben is like a crack sammich. About Katz's....yes I was drunk both times and it was around 3AM, but the food really stunk, so I doubt I'll ever go back. My favorite 3AM drunken eating place is Spanish Flower. I can't do Andy's on 11th street anymore. Their food makes me sick.
My favorite drunken eateries (though I rarely do this anymore. This is how I lost a lot of weight) are: Ruchi's, or any good Taqueria. Mama's Cafe Mai's One's a Meal And if you've never had Queso Flameado at 3:00 a.m., you are missing out on wonderful drunk food.
Fatty: Next time you're at Mama's Cafe, ask for Marc the bartender. He's my brother. Jeff: The Mexican place on 11th is Andy's. Great place.