While video has long been used to capture micro teaching episodes, illustrate classroom cases and practices, and to review teaching practices, recent developments in video annotation tools may help to extend and augment teacher self-reflection. Such tools make possible the documentation and support self-analysis using verifiable evidence as well as to examine changes in development over time. Video annotation tools offer the potential to support both the reflection and analysis of one's own teaching with minimal video editing as well as the ability to associate captured video with related student and teaching evidence. In this paper, we compare and contrast emerging video annotation tools and describe their applications to support and potentially transform teacher reflection. (Contains 1 table and 8 figures.)