Every Semester, Meadows School of the Arts hosts a series of talks by artists which are free to attend. These world class visitors are organized by Noah Simblist, who works tirelessly to coordinate these events. Be sure to check out the full schedule on http://meadowseye.com. (The website is a little wonky, a blog being used as an event calendar, but just look past that). Talks are usually held in the Meadows Museum Auditorium, but venues can vary. The format consists of a 1 hour talk followed by questions. I think this is one of the best "free" cultural resources in Dallas.
I am most excited about the visit of Guillermo Kuitca (image above) who is represented by Sperone Westwater. The venue has not yet been announced. From the Meadows Eye website:
Born in Buenos Aires, Argentina, Guillermo Kuitca is a key figure in the history of Latin American art whose work finds inspiration in the realms of architecture, theater, and cartography … This lecture is organized in conjunction with the Dallas Museum of Art and the Dallas Opera.