Last night on Jimmy Kimmel Live, Kathy Griffin humorously spoofed Justin Bieber's Never Say Never film by portraying Beebs hitting puberty, but the D-List star looked more like the dude from the Goo Goo Dolls than the mop-topped teen. On Conan, Conan O'Brien and Andy Richter show the love for new home TBS by mocking the cable outlet's heavy rotation of According to Jim and pointing out that even they have no idea what channel they're on. Meanwhile, Emma Watson's charm was on display over at The Late Show as she amused David Letterman with her "OMG" American accent. Wrapping things up on Late Night was Watson's Harry Potter co-star Daniel Radcliff, who took a pass on being charming and dissed host Jimmy Fallon's miserable attempt to explain The Deathly Hallows's complicated plot. Watch our late-night roundup to see what you missed.