Jacqui Georgi: Data stuff on Coursera - just finished (badly) the Text Search and Retrieval course in the Data Mining Specialization and am finishing up the Machine Learning course in the Data Science Specialization (which I'm rocking big time).
Phil Stevens: Not me. I am just 3 classes into the program. Frankly, with work I am struggling to dig in and really learn the material, so I won't be ready to be a TA anytime soon.
Jacqui Georgi: I find that I'm concerned about my ability. A good grade in a course does not necessarily equal a depth of understanding one might expect from a CTA. On the other hand, it's a great way to further one's knowledge. Tutoring calculus really locked in what I'd learned.