I probably give around 100 presentations a year to people in my current role. I get a great deal of enjoyment out of it - there's a mental challenge that goes with presenting in front of a room of smart people that's hard to match. You need to be prepared and you also need to be able to think on your feet - literally. At the end of a long week during a 3 hour Friday afternoon presentation, I've been known to say some pretty silly things or go off on weird tangents. So don't think I'm pointing fingers here - I'm merely relating what I thought was a funny statement.
I sat in an OS Futures presentation and one of the speakers was from IBM. He had a slide that read: "Excluding Office and Windows, IBM is the world's largest developer of commercial software". Think about that for a second. It'd be the same as a GM representative saying, "If you exclude Ford F150s and Ford Tauruses, we're the largest builder of automobiles in the world."
So, from now on I'm introducing myself as "Excluding everyone else you've met until now, I'm the smartest guy you know." ;-)