Best Bits of Lectures...

The best bits of lectures are the fleeting moments when you know that the person lecturing is alive. Capable of humour and error. They are also the best bits cause you learn nothing except a small tiny glimpse into the speakers' personality.
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During an introductory lecture on how cancer is the inability of cells to retain controlled cell growth, on the ways that cells lose their ‘brakes’…

Prof walked backwards while speaking passionately about the intricate beauty of
the cell cycle.

He promptly turns to check on his progress across the
stage. Alas! A loud crash into the whiteboard setting his specs flying and
balance askew.

The professor sheepishly smiles at the concerned class
and says, ‘Guess I lost my brakes.’

At a different lecture on how DNA repair mechanisms work. While on the slide depicting the types of repairs that are initiated,

Above said Prof was standing comfortably and confidently, a perfect picture of
the guy who knows what he is talking about. He asks dramatically and
rhetorically, ‘So what needs to be repaired?’.

The projected slides flicker.

A frown, he looks down at the array of master controls sitting
right in front of him and repeats with increased conviction, ‘So what needs to
be repaired?’

He looks up only to observe another flickering event. With
a steady hand he presses a few of those mysterious buttons with their
accompanying clicks.

Satisfied that the presentation is now bug-free, he
announces, ‘The projector needs to be repaired.’

Embarrassed laughter from the students all around and things resume.