The Arizona Science Center offers a series of programs called adult's night out  which are held the first Friday of every month. These lectures cover focused overviews on topics ranging from Genetics and Nanotechnology to Native American medicinal utilization of native plants found in the Southwest. 

There is always interesting science or engineering content but the value and interest of the talks is essentially the somewhat direct non-mass-media poisoned or dumbed down views of the individual speakers themselves. While I would attend the talks regardless I have found additional value in the evening because of the extended hours that the science center offers which allows you to catch an IMAX film and see the latest flavor of exhibit (Body Worlds, Titanic, etc.) after the lecture. 

I would have loved to have given the Science Center 4 stars but I am constantly annoyed by the science center's staff inability to get one of the three microphones set up correct for the speakers ahead of time causing a speaker to waste 5-10 minutes every month.

Beer and wine are available for purchase during the event. The adult's night out lectures are free, normal planetarium, IMAX, and special exhibit prices still apply.

Arizona Science Center Web Site:
www.azscience.org

Adult's Night Out:
www.azscience.org/adults_night_out.php