CBS announced that Stephen Colbert will be replacing David Letterman on the Late Show in 2015 after Letterman retires. Colbert joked on his Comedy Central show, The Colbert Report, that he "does not envy whoever they have to put in that chair." Jimmy Fallon congratulated Colbert on the Tonight Show last night, and Letterman says he "is very excited for him" and "flattered that CBS chose him," joking that he knew "they wanted another guy with glasses."

Aerosmith's Steven Tyler and Joe Perry have recorded a new version of their iconic song "Dream On" as a tribute to the Boston Marathon bombing victims. It will be featured on ESPN's special about the bombings, called "Dream On: Stories from Boston's Strongest." It will first air on ABC this Saturday and will be aired again on Tuesday on ESPN, on the one year anniversary of the tragedy.