The world's greatest Peter Griffin impersonator took a wrong turn at the cafeteria and ended up warming up the crowd for a costume contest at the Allentown (Pa.) Comic Con over the weekend. He really nailed the best part of Peter Griffin doing standup: Peter Griffin laughing at his own jokes.

With the noble goal of elevating the subtleties of speech, a group of scientists at the Royal Holloway College at the University in London endured an awful task. They studied "non-professional impersonators" doing their best impressions. The scientists looked at fMRI scans as these "non-professional impersonators" imitated other people's voices and foreign accents, in hopes to learn more about non-verbal aspects of speech—like tone, style, and contextual changes.

Here is actress Amy Phillips doing her impersonation of Real Housewives of New York star Ramona Singer—also known as one of the only ladies left standing after Bravo fired just about everyone else. It's absolutely amazing.

Tonight's Miley Cyrus-hosted episode of SNL was quite eclectic—Train wreck talk shows! Teen star apologies!—but perhaps nothing was more surprising than Cyrus' spot-on Justin Bieber impersonation (during the "Miley Cyrus Show" sketch). She sounds just like her!

MTV's New Year's broadcast began with the following clip of Jersey Shore's Snooki and SNL's Bobby Moynihan—dressed as Snooki. Inside, they discuss the year that was and get ready for the new year with a "training montage, bitch!"

Kentucky Senate candidate Rand Paul has released a pleasant ad in which an Obama impersonator signs "Bigger Government" bills and thanks Paul's opponent, Jack Conway, for his support. But the Obama impression? That's some Southern accent, for a Hawaiian nerd.

Brandon Hardesty has done it again. This time, the uber-talented comedian recreates a scene from Willy Wonka and the Chocolate Factory as both Christopher Walken and Jack Nicholson, and dammit if it isn't the best thing we've seen today. Video inside.