Hacker culture history? Man, hell no. What kind of lecture would that be? No real questions can be asked, who would learn anything they couldn't by reading a short text. IMO, that's information (not the word I'm looking for, but you get the picture), not knowledge. These lectures should be imparting knowledge, where the lecture format is helpful.
Just my 2 cents.
"There is no end. There is no beginning. There is only the infinite passion of life."