An excellent way to present videos in a keynote presentation is by using the Insert Video feature in Keynote. This will allow you to easily embed videos from different platforms into your presentation. You can also use a third-party app like Vimeo, YouTube, or Wistia to embed videos from their platforms. If you want to play the video at a specific point in the presentation, you can import it as an audio file. Additionally, you can create GIFs from the video and insert them as images into the keynote slides.