While I was waiting for new tires to be put on my car today I was able to watch the landing of Mars InSight which was relayed via the MarCo A&B experimental interplanetary cube sats.
Since everything worked so well we even got back a picture from the lander mere moments after landing was confirmed.
Congratulations to everyone involved in this mission, I'm excited to see what we learn not only about our friend the red planet but also about the continued feasibility of the cube sat program. Maybe we'll see something like the PlanetLabs Dove cube sat streaking towards Mars someday.
MarCo Relay Animation from NASA/JPL-Caltech