Should I add descriptions of courses taught on my CV
A brief description of the courses you've taught is never remiss, as it helps reviewers place your teaching work into context. This is especially important for teaching-primary positions. However, for many positions, you also have the ability (or requirement) to submit a "teaching statement." This would be a place, for instance, where you could discuss your unique projects. 

What I would certainly want people to know about in the courses I taught:


Full course name
Whether they were required or elective
The intended audience (e.g., "freshmen" or "upper-year undergraduates and graduates in the major")
How long (how many times) you taught the course
Did you have sole responsibility, or was it co-taught
Format of the class (lecture, seminar, laboratory, etc.)
A brief description of the course, if its nature cannot be inferred from the title (for example, "Introduction to US History to 1865" doesn't need an explanation; "The Critical Period" would.) 


Other information could be listed on a "courses taught" appendix, but I might not necessarily include it directly in the CV.