First of all, we have some clips from that first Colbert Late Show, including his opening bit and George Clooney introducing his new 'movie'. He also gave a heart-warming tribute to David Letterman.
Over on Late Night Tina Fey showed the internet what kind of dubsmash should go viral (hint: ones with Maya Rudolph in it).
Over on The Tonight Show, Jimmy had Donald Trump on for some silliness and NFL stars read their own superlatives.
And here's the weekly Nightly Show recap.