March 3, 2016 11:26 pm ‘Tonight Show' Unveils ‘TGIF'-Style Theme Song The Tonight Show’s TGIF-style opening credits, with an original theme song written and performed by Jesse Frederick (who sang the themes to “Full House,” “Family Matters” and “Step by Step”). US & World Videos 1:24 Bear and adorable cubs visit pool at Monrovia home 0:46 Oscar presented to LAUSD music repair shop team 1:52 Amanda Seyfried reveals her kids' reaction to her daring metallic Met Gala look 1:34 Nicole Kidman floored over Olivia Rodrigo's AMC ad tribute 1:12 Ariana Grande channels Glinda at 2024 Met Gala