The video teaches PES through having students analyze several spectra, then has them work through a few extra problems. Thanks to Thomas Silak for his excel spreadsheet for simulating the spectra in the video.
Source: http://www.youtube.com/watch?v=rz0gTxnpqiM&feature=c4-overview&list=UU_INnjIe8mA_G0bIH-HRJIQ
This handout goes with the above video.
Source: Reed Konsler
Source: https://www.youtube.com/watch?v=NRIqXeY1R_I
View this link to see some elements and PES. http://www.chem.arizona.edu/chemt/Flash/photoelectron.html