session

A  session  is a type of post that is an event likely with a presentation and speakers. Sessions are also often part of larger events (like conferences) that are typically a whole day or span several days.

Aaron Parecki
Aaron Parecki has been posting sessions for quite some time here:
 * http://aaronparecki.com/presentations

Example:
 * http://aaronparecki.com/presentations/2011/05/27/1/ambient-location-and-the-future-of-the-interface

WithKnown
Known has a core presentations plugin that will allow users to upload slide presentations.

Lanyrd
Lanyrd has pages for both conferences and sessions in conferences.

Example:
 * http://lanyrd.com/2013/eia2013/sckykt/ is a session at a conference.