Depends on what they do to you, and how long you're out.
I had a relatively minor op in the spring, I was probably out for 20 minutes or something - not long at all, anyway. It went really well, but it was a fairly serious operation (eye-related, but they had to break my nose ). I wasn't happy to leave the hospital that night, and it was a week or two before I was back to normal. Granted, I got a small infection, but still ...