I have to say, if I weren't constantly worried about how incompetent/useless I am at my job it would be one of the sweetest jobs ever. On this project I'm working in my own company's office, and a lot of people there come in after 10 regularly. It's contract work so as long as you put in your hours and make it to the meetings no one really gives a shit. It's mainly just a couple managers there bright and early because they're the ones dealing with the clients all day.
Couple weeks ago I was up retardedly late on Sunday night cause it was karaoke night at a bar some of my friends go to. I showed up at the office at like 10:45 next morning, walked by my manager on the way in, and all he said was "hi".