Mary Cooch (aka the Moodlefairy) just put out a great 5 minute video that shows how to embed video, audio or even pictures into the choice activity instead of just plain text. The trick is a pretty easy way to add additional rich content into your classroom and for students to easily engage it.
Check out the video below. Also, check out the UsingMoodle channel on Youtube.com which has a plethora of great video tutorials to learn from. A list of Mary’s many Moodle-focused resources is available below.