Longest I've ever had was I blocked 3:15 EWR-IAD. We ended up flying it back tower enroute at 8,000ft.

I used to get so mad because we weren't block or better, but now that we are I don't care! haha! My trip this past week was blocked and credited at 20:00, and when we finished it was slightly over 22. B or B really takes some stress out of delays for me. I could care less about delays now, I need the cash badly as I'm in the middle of buying a house! ahhhh!!!!