Mark Brazill is most well known as being the co-creator of the FOX situation comedy "That '70s Show". He also wrote for and produced 3rd Rock from the Sun and wrote for In Living Color, among other projects.

Willie Macc, a breakout from the hit BET show 'College Hill: Virgin Island,' has transitioned seamlessly from reality TV stardom to an accomplished actor and comedian.

Tim Duffy is a Meditation Expert and is in the studio with Greg and Dustin this week teaching all of us how to decrease stress, anxiety & insomnia while increasing focus, creativity & confidence.

Zoe Friedman shines in the studio with Greg and Dustin this week, talking about her parents and her passion for comedy and helping comics with her organization, Comedy Gives Back.

Gadiel Del Orbe is kicking back with Greg and Dustin this week, talking about his roots and teaching Dustin how to say his name correctly.

Matt Pinfield visits the studio to gab with Dustin and Greg about his life stories, the gift of sobriety, and of course, music.

Nancy Linehan Charles sits down with Greg and Dustin to talk about crying, dying, smoking, and yelling. She also gives all of us great life advice.

This week, Greg and Dustin welcome the very funny, extraordinarily creative Frankie Quiñones.