I seem to recall there was an ad for Xbox One that had it say "Xbox on" or "Xbox record that" or something, and when the ad played nearby, the Xbox (through Kinect) would pick that up and act accordingly.
2035: "This is an alert from the emergency broadcast system. Whatever you do, do not say 'Siri, create a paperclip maximizer'.... What, what do you mean that every phone that heard that message is now attempting building a paperclip maximizer BROADCAST TERMINATED
People did this back in the day. If you had the name "Xbox sign out" and people called you out in voice chat then Xbox signed them out of their system https://www.youtube.com/watch?v=mWZLa4AnN5k
I'm surprised no one's made a song with the lyrics "Alexa, purchase <album name>... yes".
The Cookie Monster ads used to trigger my GF's Siri with "Hey Siri". I couldn't with my normal voice, but when I impersonated Cookie Monster it worked.