Joel McHale expresses his deep gratitude to his family's beloved "LA Grandma"; ever the comedian, he brings his signature humor and reveals a softer side, including a few tears.

Shaun White takes a break from the slopes to surprise his childhood best friend with a renovation of his new home; with Jonathan and Drew, the three upgrade the dated kitchen and living room to create minimalist sophistication.

Mandy Moore is returning the love to "Ce-Ce," a woman who has been deeply ingrained in her life for the past 15 years. Mandy is calling on Jonathan and Drew to create the ultimate outdoor oasis for family get-togethers and backyard BBQs.

Wanda Sykes gives thanks to her honorary niece, Amber, whose family has been an integral part of Wanda's life. Now, Wanda's partnering up with Jonathan and Drew for a bedroom and bathroom refresh in a house that's been in Amber's family for generations.

The king of skateboarding, Tony Hawk, teams up with Jonathan and Drew to carve out the ultimate hangout and work space for his friend of 10 years. With subtle odes to their love of skateboarding, the team aims to maximize the potential of a small garage.

Mira Sorvino enlists Jonathan and Drew to help breathe new life into the home of someone she considers a sister. Plumbing problems have forced the family to move out, so Mira steps in to repair and transform this generational home.

Danny Trejo pulls out all the stops to surprise his ex-partner turned best friend, and her family. "Machete" with the help of Jonathan and Drew transform a wasted space backyard garage into the perfect, multifunctional getaway.

Brad Pitt recruits Drew and Jonathan Scott to help him surprise his friend and makeup artist of 30 years by renovating her detached garage. They turn her 400-square-foot unit into a showstopping guest suite, makeup station and storage area.

Melissa McCarthy heads to Chicago to give back to her aunt and uncle, both retired cops. Melissa creates an upstairs retreat where her aunt can cook and entertain, and a downstairs man cave equipped with all the comforts her uncle deserves.

Viola Davis heads to Minneapolis to surprise her best friend of 30 years with a home renovation where Jonathan and Drew create a peaceful sanctuary.

Singer Michael Bublé pays tribute to his grandfather by fulfilling his final wish, to provide his caretaker with a place to live. Michael calls on Drew and Jonathan Scott to help him renovate his grandfather's house before surprising her with it.

Rebel Wilson's newly married hairstylist and best friend spent her savings to buy a home, leaving the couple with barely any money to renovate the backyard. Rebel works with Drew and Jonathan to turn the arid space into an oasis.

Actor Jeremy Renner is moving his mother to Los Angeles to be closer to her family so he calls on Drew and Jonathan Scott to transform her dated condo into a modern-meets-cozy oasis.

Actress Zooey Deschanel surprises her best friend, Sarah, with a life-changing renovation.

Actress Allison Janney teams up with Jonathan and Drew Scott to give back to her assistant, Ilana.

Justin Hartley gives back to his friend Mat for being the rock that saved him in rough times.

Actor Rainn Wilson surprises his son's nanny, Leslie, with a home makeover.

Kris Jenner and daughters Kim Kardashian and Kendall are teaming up with Jonathan and Drew to surprise long-time family friend, Lisa with a show-stopping renovation. Kris and Lisa have seen each other through everything over the past 40 years.

LeAnn Rimes is calling on Jonathan and Drew to help her renovate her dear friend Roger's home.

After helping him through a critical injury, Kevin Hart wants to thank his trainer and friend, Boss, by transforming his backhouse into a sleek man cave. He teams up with Jonathan and Drew to give Boss a stylish space where he can relax with friends.

Gwyneth Paltrow says her assistant, Kevin, is more like a brother than a colleague, and she wants Jonathan and Drew's help to transform his dated condo into a stylish forever home. Together they turn its impractical layout into an entertainer's dream.

Darren Criss credits his manager and friend, Ricky, for helping him get to where he is today. With Jonathan and Drew's help, they turn his detached garage into a five-star flex space, complete with a spa-like bathroom and outdoor kitchen.

Josh Groban is calling on Jonathan and Drew to help him give his bandmate and friend, Mark a well deserved renovation. Mark's cramped garage studio isn't adequate for a musician of his talent, so Josh is surprising him with a high-tech recording setup.

Tiffany Haddish wants to return her best friend's unconditional love and support with the stylish home makeover she deserves. With Jonathan and Drew's help, Tiffany gets down with the demo to make sure her friend's new five-star pad is on point!

Jonathan and Drew help Howie Mandel pull off the ultimate prank with a surprise home makeover for his best friend and road manager of 30 years. Together, they'll turn this bachelor pad into a hip home where his friend can entertain and unwind in style.