Jimmy Fallon's NBC reality series 'On Brand with Jimmy Fallon' has officially been cancelled after just one season, reportedly following poor ratings and harsh viewer reactions. The marketing-themed competition show initially launched with strong buzz but quickly lost momentum, with audiences calling it 'boring' and 'terrible' online. Fallon will continue hosting 'The Tonight Show Starring Jimmy Fallon'. The news also comes as Stephen Colbert prepares to end his 'Late Show' run on CBS.