Something that is poignant touches you deeply. Watching a poignant YouTube video about baby penguins chasing their mothers, for example, might give you a lump in your throat. Poignant comes from the Latin pungere, "to prick," the same root as pungent. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.