I Wanna Be Like You

TV characters who've dressed as/like each other:

After getting über drunk at a birthday party thrown for him at the Simpsons' house, Barney Gumble descended the stairs dressed as Marge Simpson in The Simpsons.

When he was told to dress as somebody he admired, Alan Shore (James Spader) turned up at the office costume party dressed as his colleague Shirley Schmidt (Candice Bergen) in Boston Legal.

Special Agent Seeley Booth (David Boreanaz) imitated his co-workers when he dressed as a "Squint" (someone with a very high IQ and basic reasoning skills) in Bones.

As part of a "Freaky Friday social experiment" to try to prove who has it harder in America, women or black men, Jenna Maroney (Jane Krakowski) and Tracy Jordan (Tracy Morgan) switched roles in 30 Rock.

Five Reasons To Watch Mean Girls

1. It's written by Tina Fey, the creator and star of 30 Rock.
2. It's directed by Mark Waters, who also directed The House of Yes.
3. Rachel McAdams is fabulous (but evil) as Regina George.
4. The "Jingle Bell Rock" scene is great.
5. It is so fetch!