6. One or more non-transitory computer-readable media, storing instructions that, when executed by one or more computing devices, cause performance of: identifying media content that has been at least partially played at a media playback device within a recent period of time; presenting, within a message composition interface, an arrangement of phrases selected based on the identified media content; receiving selection input that selects a particular phrase from the arrangement; responsive to the selection input, inserting the particular phrase into a message being composed within the message composition interface; receiving, from a server system, metadata describing the identified media content; selecting at least one of the phrases for inclusion in the arrangement from the metadata, including at least one of: a title, actor or actress name, writer name, air date or time, channel, clip, or image.
6. One or more non-transitory computer-readable media, storing instructions that, when executed by one or more computing devices, cause performance of: identifying media content that has been at least partially played at a media playback device within a recent period of time; presenting, within a message composition interface, an arrangement of phrases selected based on the identified media content; receiving selection input that selects a particular phrase from the arrangement; responsive to the selection input, inserting the particular phrase into a message being composed within the message composition interface; receiving, from a server system, metadata describing the identified media content; selecting at least one of the phrases for inclusion in the arrangement from the metadata, including at least one of: a title, actor or actress name, writer name, air date or time, channel, clip, or image. 9. The one or more non-transitory computer-readable media of claim 6 , wherein the instructions, when executed by the one or more computing devices, further cause performance of: receiving, from a server system, popularity scores for at least a first set of phrases, relative to the identified media content; generating the arrangement based at least on the popularity scores.