Sky Caves, Learning Technologist
Vialogue is an excellent platform to facilitate discussion around videos, allowing students to annotate with both comments and polls, at time-stamped points in the video, and reply to one another. The site supports videos from YouTube and Vimeo, as well as MOV, MP4 and other common video file types. My favourite things about this tool is it's ease of use - both for teachers and students - and it's clean interface. An especially useful tool for peer analysis and/ or research projects.