yeah I thought it was really dumb that Worf was not recognized but Sisko was. No they didn't. I just looked at his ridges in apocalypse rising and compared them to a normal episode, they are completely identical. Ridges or not, Worf's face is very easy to see, and Gowron and Changling-Martok both know him. Gowron knows him very well, and I'm sure he has some notoriety in the Empire... at least enough to warrant a line or two in the script about the dangers of worf being recognized. Realistically the characters should be worried about that. I think the writers were counting on us forgetting or something.