This weekend on The iHeartRadio Countdown with Mario Lopez 'Blackish' star Marsai Martin joins us via Zoom! She is starring in the new 'PAW Patrol Movie' and filming the 8th and final season of her hit ABC show 'Blackish' of course. She breaks down all of that, helps us countdown the top 20 songs and more! Plus Mario will be playing some of his throwback classics, talking music news and has some surprises in store! Tune in!