Recurring Guest Characters Ken Jeong 2 guest appearances Joel McHale 1 guest appearances Kelly Osbourne 1 guest appearances Bret Michaels 1 guest appearances JoJo Siwa 1 guest appearances Rob Gronkowski 1 guest appearances Hunter Hayes 1 guest appearances Gordon Ramsay 1 guest appearances Jenny McCarthy 1 guest appearances Sherri Shepherd 1 guest appearances Donnie Wahlberg 1 guest appearances Jason Biggs 1 guest appearances Jeff Dye 1 guest appearances Jackie Evancho 1 guest appearances Donny Osmond 1 guest appearances Sarah Palin 1 guest appearances Nicole Scherzinger 1 guest appearances Adrienne Bailon 1 guest appearances Wayne Brady 1 guest appearances Gavin DeGraw 1 guest appearances ⇤ « 1 2 » ⇥