I am currently teaching ASTR 2600: Introduction to Scientific Computing, and taught the same course last semester. Some of the course materials are available online.
From July 6th through August 6th, 2010, I co-taught ASTR 1120: Stars and Galaxies with Devin Silvia. The website is on CU Learn, though lectures are posted here.
I was TA for ASTR 3520: Spectroscopy in fall 2007, fall 2008, and Spring 2010 (not offered 2009)
I was TA for ASTR 3510: Imaging during the 2008 spring semester, the 2009 Fall semester, and the 2011 Fall semester.
While I was TA for ASTR 3520 during Fall 2007, I made the majority of the web pages at the ASTR 3520 Fall 07 class web page [archived version]. Below are two versions of a lecture I gave, but future lectures are not likely to be powerpoint (PDF is more portable).
Instructional pages from ASTR 3520:These all require serious reorganization but the relevant information is still there.