Ph.D. Comics (or Piled Higher and Deeper.com) provides some of the funniest grad school characters and web comics that I have ever seen. I use the comics in my teaching. They have a new group of comics for subscribers to Academia.edu.

Anyone who is or has been a graduate student can relate to the characters and topics. I like to post on some of the comics on my Blackboard course announcement pages. I download new comics, add to my favorites folder, and rank order according to topics that might seem most relevant to my students during that part of the semester. For example, there are always new additions to the topic of research and the perils of procrastination. I love posting the procrastination examples when students are working on assignments.

According to www.allexperts.com:

Piled Higher and Deeper is a webcomic written and drawn by Jorge Cham, now a mechanical engineering instructor at Caltech, which follows the lives of several grad students. First published in the fall of 1997 when Cham was a grad student himself at Stanford, the strip deals with issues like the difficulties of scientific research, the perils of procrastination and the endless search for free food.